Oscar Melendez " Artes Visuales" Poster Auction
Upcoming AuctionsAuctions Near MeHow Auctions Work
|
HelpNewsConsignPrice Results
LiveAuctioneers Logo
Art
Jewelry
Asian Antiques
Furniture
Collectibles
Coins
Home & Décor
Fashion
Explore Categories

Art
Artists
Popular Searches
Browse by Origin
TimeLine Auctions Antiquities Sale - Day 2
TimeLine Auctions Ltd.
Sponsored.Your ad here?

Jewelry
Featured
Popular Searches
Weekly: Jewelry
Bonhams
Sponsored.Your ad here?

Asian Antiques
Browse By Origin
Featured
Japanese Art: Printed, Painted and Sculpted (onlin
Bonhams
Sponsored.Your ad here?

Furniture
Tables
Seating
Cabinets & Storage
Browse By Styles
Featured
ESTATE Fine Furniture, Decor, Jewelry & More
South Jersey Auction by Babington Auction Inc
Sponsored.Your ad here?

Collectibles
Fine Books and Manuscripts
Freeman's | Hindman
Sponsored.Your ad here?

Coins
Browse By Origin
Featured Coins
Memorial Day Savings! Rare Coin Hoard 21.2 D3
Key Date Coins
Sponsored.Your ad here?

Home & Décor
Featured
June 2024 Estates Sale
Roland NY
Sponsored.Your ad here?

Clothing
Accessories
Featured Designers

lots of lots
View Auction
Collectibles
Advertisements & Signs
Posters
Previous
Lot 0259
Next
item-176946693=1
item-176946693=2
item-176946693=3
item-176946693=4
item-176946693=5
item-176946693=6
item-176946693=7
item-176946693=8
item-176946693=9
Oscar Melendez " Artes Visuales" Poster
Oscar Melendez " Artes Visuales" Poster
Item Details
Description
Oscar Melendez " Artes Visuales" Poster 32 x 24
Buyer's Premium
  • 28%

Oscar Melendez " Artes Visuales" Poster

Estimate US$500 - US$600
Starting Price

US$100

Starting Price US$100
or 4 payments of $25.00 with zip
1 bidder is watching this item.
Get approved to bid.
Shipping & Pickup Options
Item located in Pasadena, CA, US
See Policy for Shipping
Local Pickup Available
Payment
Accepts seamless payments through LiveAuctioneers
Auctioneer Announcement
Auction this sunday.
Luxurious Treasures

Luxurious Treasures

Pasadena, CA, United States
50 Reviews
1,635 Followers

Hollywood Spring Estate Sale

Jun 02, 2024 1:00 PM EDT|
Pasadena, CA, USA
View Auction
Antique Bronze Art Noveou lamp: Antique Bronze Art Noveou lamp measures approx - 6.75deep x 19 high x 5.5 wide
3 days LeftAntique Bronze Art Noveou lamp
US$800
Post Modern Italian VeArt Glass and Chrome Sconces: Post Modern Italian VeArt Glass and Chrome Sconces 5 x 5.5 x 9
3 days LeftPost Modern Italian VeArt Glass and Chrome Sconces
US$250
Hand made Leather and wooden canister with Fur Coating.: Hand made Leather and wooden canister with Fur Coating.
3 days LeftHand made Leather and wooden canister with Fur Coating.
US$50
Pair of Column Cement Plant Stands: Pair of Column Plant Stands measures appprox 1h x 8w x 8d
3 days LeftPair of Column Cement Plant Stands
US$150
French Antique Queen Sized Frame Carved With Linen Fabric: French Antique Queen Sized Carved With Linen Fabric. Stamped on the interior of the bed frame has a made in France Stamp. Show in images. Measures 86 x 71.25 interior bed frame measures - 68 x 83 x
3 days LeftFrench Antique Queen Sized Frame Carved With Linen Fabric
US$1,500
Pair of Italian Modern Pendant lamps with Floral Petal: Pair of Italian Modern Pendant lamps with Floral Petal Design measure 49 high x 16 diameter
3 days LeftPair of Italian Modern Pendant lamps with Floral Petal
US$1,500
Italian Excelsior Contemporary Modern Coffee Table: Italian contemporary modern coffee table made by Excelsior with concave chrome legs, beveled glass and sleek granular wood. H 16 in. x Dm 48 in.
3 days LeftItalian Excelsior Contemporary Modern Coffee Table
US$350
Metal 7 Light Mid Century Chandelier: Metal 7 Light Mid Century Chandelier winderful elongated arms with swirl design. Beautiful long elctric candle sticks on each arm. The bottom of the chandelier offers a switch on light aiming
3 days LeftMetal 7 Light Mid Century Chandelier
US$800
80s Lucite Modern Abstract Painted Ceramic Bowl Wall Art: Modern 80s Abstract Painted Ceramic Bowl Wall Art. Custom Lucite made frame in unique design. Frame measures 30 wide x 30 deep x 4.5 deep the bowl measures 24 inches in diameter.
3 days Left80s Lucite Modern Abstract Painted Ceramic Bowl Wall Art
US$200
Authentic Vintage Hermes 21 Speed Bicycle By Peugeot: Authentic Vintage Hermes 21 Speed Bicycle By Peugeot. Coated Light weight metals with leather accents. This beautiful bicycle is in amazign condition. The tires are in amazing like new condiiton. All
3 days LeftAuthentic Vintage Hermes 21 Speed Bicycle By Peugeot
US$5,000
Mid Century Abstract Ceramic bowl: Mid Century Abstract Ceramic bowl. Such a beautiful Coral like color with designed cracking paint.
3 days LeftMid Century Abstract Ceramic bowl
US$75
17thc Chinese Bowl: 17thc Chinese Bowl Approx. 6 x 3
3 days Left17thc Chinese Bowl
US$500
Post Modern Italian VeArt Glass and Chrome Sconces: Post Modern Italian VeArt Glass and Chrome Sconces . These sconces measure approximately 9 high x 5 deep x 5.5 wide.
3 days LeftPost Modern Italian VeArt Glass and Chrome Sconces
US$250
17thc Chinese Bowl: 17thc Chinese Bowl Approx. 6 x 3
3 days Left17thc Chinese Bowl
US$500
Mid century 5 Tier Lucite Waterfall Chandelier: Contemporary Modern 5 tier Italian Brass and Lucite hanging chandelier. The lucite waterfall design on this chandelier has a circular design for each tier. each Lucite piece has a 3 vertical lucite
3 days LeftMid century 5 Tier Lucite Waterfall Chandelier
US$1,000
18thc Chinese Porcelain box: 18thc Chinese Porcelain box approx 5 x 3.5 x 2.5 high
3 days Left18thc Chinese Porcelain box
US$300
Italian 60s Bronze Mens Statue Holding Glass Table: Italian 60s Bronze Mens Statue Holding Glass Table
3 days LeftItalian 60s Bronze Mens Statue Holding Glass Table
US$8,000
1930s Porcelain Table lamp Of Young Man Reading A Book: 1930s Porcelain Table lamp Of Young Man Reading A Book. The copper stem comes out the back and extends upwards. The lamp shade is included with this lot.
3 days Left1930s Porcelain Table lamp Of Young Man Reading A Book
US$250
Gold Fleck Venezia Murano Parrot 12H: Gold Fleck Venezia Murano Parrot 12H
3 days LeftGold Fleck Venezia Murano Parrot 12H
US$400
70s Signed Brutalist Hand Made Metal Couple.: 70s Signed Brutalist Hand Made Metal Couple seemingly dancing or embracing each other. 11w x 17d x25h
3 days Left70s Signed Brutalist Hand Made Metal Couple.
US$500

Related Posters

Oscar Kokoschka Offset Lithographic Poster: Oscar Kokoschka (Austrian, 1886-1980) Museum in Pochlarn Offset Lithographic Poster, featuring the "Schlafende Frau" [Sleeping Woman], one of a series of woodcuts from the illustrated book, "Die Traum
Jun 11, 2024Oscar Kokoschka Offset Lithographic Poster
US$50
Original Vintage Roland Garros 1983 French Open by Velickovic: This is an original vintage poster commissioned by the French Open Authority to promote the event held in the Roland Garros Stadium in Paris. The Men's Singles Winner was Yannick Noah and the Women's
Jun 20, 2024Original Vintage Roland Garros 1983 French Open by Velickovic
US$300
Coca-Cola Framed Italian Poster, Old Coca-Cola Original Frame: Coca-Cola Framed Italian Poster, Old Coca-Cola Original Frame, 36.75" x 24.5", Circa 1954, Trapeze Artist, Kansas Private Collection. Woody Auction Cannot Ship This Item, It Must Be Picked Up In Perso
Jun 08, 2024Coca-Cola Framed Italian Poster, Old Coca-Cola Original Frame
US$175
500 Home Run Hitters Multi-Signed (11) 37x18 Poster Framed PSA/DNA 185523: 500 Home Run Hitters Multi-Signed (11) 37x18 Poster Framed PSA/DNA 185523 Original/Reprint: Original Product: Photo Sport: Baseball Productname: Yogi Berra HOF Signed 1985 Topps Cirsle K Card #33 Yank
11 hrs Left500 Home Run Hitters Multi-Signed (11) 37x18 Poster Framed PSA/DNA 185523
US$105
David Hockney 1972 Olympics Munich Poster: David Hockney (English, b. 1932), 1972 Olympic Games Munich, Poster in Colors, text reading "Olympische Spiele Munchen 1972" below, signed and dated "'70" in plate lower right, mounted on panel, unfra
Jun 11, 2024David Hockney 1972 Olympics Munich Poster
US$100
Large French Milano framed poster.: Large French Milano framed poster. Age unknown. Structurally sound. No noticeable issues seen.
3 days LeftLarge French Milano framed poster.
US$110
Psychedelic Art Poster Lemon Sky by David Byrd: DESCRIPTION: Psychedelic art poster Lemon Sky by David Byrd. A vintage theatrical poster depicting a male profile in the psychedelic art style. Inscriptions: Lemon Sky, The Playhouse 357 W. 48 St. Sig
7 days LeftPsychedelic Art Poster Lemon Sky by David Byrd
US$100
Jules Cheret (French, 1836-1932) Casino De Paris Large Poster: DESCRIPTION: Antique Jules Cheret (French, 1836-1932) lithograph in colors advertising poster for Camille Stefani and Casino de Paris (roughly translated) "Every Evening Concert-Show Ball [/] Night Pa
Jun 11, 2024Jules Cheret (French, 1836-1932) Casino De Paris Large Poster
US$100
COMMERCIAL HARVARD BREWING COMPANY POSTER 1901: An antique commercial Harvard Brewing Company poster, 1901. The poster features a complex composition with a brewery at the bottom and people on a ship waving flags with the letter H, the Harvard logo
1 day LeftCOMMERCIAL HARVARD BREWING COMPANY POSTER 1901
US$50
Roy Lichtenstein Signed Exhibition Poster: Roy Lichtenstein-Signed Exhibition Poster "Girl with Hair Ribbon", offset lithograph poster for the Solomon R. Guggenheim Museum, NYC; signed by the artist in ink lower right "Roy Lichtenstein" Sight:
Jun 08, 2024Roy Lichtenstein Signed Exhibition Poster
US$500
PITTSBURG GRAND PRIX POSTER: Vintage 1996 Pittsburg Grand Prix framed poster signed by many of the race car drivers. 25" x 15.5" oa
11 hrs LeftPITTSBURG GRAND PRIX POSTER
US$50
AFTER LEONETTO CAPPIELLO 1927 CIRIO POSTER ON CANVAS: Color print on canvas, a reproduction of the 1927 advertisement by Leonetto Cappiello, 1875 to 1942, an Italian-French caricaturist and painter known for his bold and bright poster designs. The affich
Jun 08, 2024AFTER LEONETTO CAPPIELLO 1927 CIRIO POSTER ON CANVAS
US$20
Elvis Presley Poster: Elvis Presley poster, tour poster advertising concert from Jacksonville, Florida, stamped on bottom "letterpressed from original show poster", reproduction height 28 in. x width 22 in. Prove
4 days LeftElvis Presley Poster
US$10
Tilda Thamar (Argentina, 1921) Signed Tiger Poster: Printed tiger poster advertising the art exhibition of Tilda Thamar held at the Hotel de Paris, 1983 from Monte Carlo. Signed by Tilda, numbered 13/75. Biography (Artsper):Tilda Thamar was famous for
Jun 08, 2024Tilda Thamar (Argentina, 1921) Signed Tiger Poster
US$125
Rockport Arts Festival Posters, 1993-2022: Collection of (11) flat paper storage boxes containing Rockport Arts Festival poster sheets, with multiples of the posters from years between 1993 and 2022, numbering approximately 996 in total, each
4 days LeftRockport Arts Festival Posters, 1993-2022
US$10

More Items in Posters

View More
Frank Stella "Protractor VI" Serigraph Poster 1968: Frank Stella (American, b.1936), "Protractor Variation VI" Serigraph Poster on Paper, 1968, from "Constructivism in 20th Century" Exhibition, McCrory Corporation and Tel Aviv Museum, label written in
Jun 09, 2024Frank Stella "Protractor VI" Serigraph Poster 1968
US$150
Alphonse Mucha Job Cigarette Papers Poster: Alphonse Maria Mucha (Czech Republic, France and New York artist, 1860-1939) French color lithograph advertising poster for JOB (Joseph Bardou Company) cigarette papers, depicts a female figure with a
15 hrs LeftAlphonse Mucha Job Cigarette Papers Poster
US$1,500
Will Bradley Arts & Crafts Art Nouveau Original Poster: Will H. Bradley (1868 - 1962) "When Hearts are Trumps by Tom Hall" color lithograph, Boston circa 1894. An original advertising poster for this book by Tom Hall. Signed by Bradley in image. Measures 2
2 days LeftWill Bradley Arts & Crafts Art Nouveau Original Poster
US$150
HAWAIIAN GAZETTE CO. "FLORAL PARADE POSTER": Rare Hawaiian Gazette Company, Honolulu, Hawaii "Floral Parade Poster" in honor of Washington's birthday 1909. Provenance: Property of a Main Line Lady22.75” x 28.75” oa
11 hrs LeftHAWAIIAN GAZETTE CO. "FLORAL PARADE POSTER"
US$1,000
David Hockney 1972 Olympics Munich Poster: David Hockney (English, b. 1932), 1972 Olympic Games Munich, Poster in Colors, text reading "Olympische Spiele Munchen 1972" below, signed and dated "'70" in plate lower right, mounted on panel, unfra
Jun 11, 2024David Hockney 1972 Olympics Munich Poster
US$100
Henry Rankin Poore (Am 1859-1940) Bear Dogs Litho: Henry Rankin Poore (American 1859-1940) Bear Dogs chromolithograph on paper,framed, Margins trimmed (but saved ) - Painted as an advertising poster for Winchester Firearms- 24 x 35" 30 x 41" as framed
Jun 07, 2024Henry Rankin Poore (Am 1859-1940) Bear Dogs Litho
US$275
Collection of 3 lithography art posters: Richard Anuszkiewicz and Attilio Salemme 27?H x 26 1/4?W: Collection of 3 lithography art posters: Richard Anuszkiewicz and Attilio Salemme Richard Anuszkiewicz (American, 1930-2020) Outer Dichotomy, Iridescence Attilio Salemme (American, 1911-1955) Inquisit
2 days LeftCollection of 3 lithography art posters: Richard Anuszkiewicz and Attilio Salemme 27?H x 26 1/4?W
US$100
Jules Cheret (French, 1836-1932) Casino De Paris Large Poster: DESCRIPTION: Antique Jules Cheret (French, 1836-1932) lithograph in colors advertising poster for Camille Stefani and Casino de Paris (roughly translated) "Every Evening Concert-Show Ball [/] Night Pa
Jun 11, 2024Jules Cheret (French, 1836-1932) Casino De Paris Large Poster
US$100
VINTAGE AMERICAN MAURIN QUINA LITHOGRAPH POSTER: A vintage American Maurin Quina aperitif advertisement color lithograph poster. Designed by Leonetto Cappiello in 1906. The poster depicts a devil opening an alcohol bottle. Titled Maurin Quina Le Puy
1 day LeftVINTAGE AMERICAN MAURIN QUINA LITHOGRAPH POSTER
US$50
Roy Lichtenstein (1923-1997), "Crak!" poster for Castelli Gallery exhibition, circa 1964: Roy Lichtenstein(1923-1997)"Crak!" poster for Castelli Gallery exhibition, circa 1964Offset lithograph in colors on wove paperUnsigned; Poster Originals Ltd., Hollywood, CA, prntr. and pub.Image: 18.5
Jun 11, 2024Roy Lichtenstein (1923-1997), "Crak!" poster for Castelli Gallery exhibition, circa 1964
US$1,000
Original painting by unidentified artist used for Tokyo CosmiCon poster. 1977.: Original painting by unidentified artist used for Tokyo CosmiCon poster. 1977. Original gouache on board. Image 13 x 9 1/2 in. Matted but unframed (not examined out of mat, overall dimensions 19 x 15
Jun 07, 2024Original painting by unidentified artist used for Tokyo CosmiCon poster. 1977.
US$250
COLLECTION OF 3: COCA-COLA AND PHILIP MORRIS ADVERTISEMENTS.: A nice collection of three advertising including a tin Coca-Cola sign, a cardboard Coca-Cola poster, and a diecut cardboard Philip Morris sign. CONDITION: The C. 1930's metal sign retains wonderful gl
Jun 08, 2024COLLECTION OF 3: COCA-COLA AND PHILIP MORRIS ADVERTISEMENTS.
US$500
Marcel Duchamp, A Poster Within a Poster: Marcel Duchamp A Poster Within a Poster 1963offset lithograph in colors 34.5 h x 27 w in (88 x 69 cm) Signed to upper left 'Marcel Duchamp'. This work is from the edition of 300 published by t
5 days LeftMarcel Duchamp, A Poster Within a Poster
US$1,500
Coca-Cola Framed Italian Poster, Old Coca-Cola Original Frame: Coca-Cola Framed Italian Poster, Old Coca-Cola Original Frame, 36.75" x 24.5", Circa 1954, Trapeze Artist, Kansas Private Collection. Woody Auction Cannot Ship This Item, It Must Be Picked Up In Perso
Jun 08, 2024Coca-Cola Framed Italian Poster, Old Coca-Cola Original Frame
US$175
1977 Pink Floyd "Animals" Flying Pig Poster: Later Bill Grahm edition 1977 Pink Floyd "Animals" with their famous flying pig supporting their album. Depicting pig balloon floating above the fog toward the Golden Gate Bridge. Subtle play on air t
Jun 22, 20241977 Pink Floyd "Animals" Flying Pig Poster
US$55
COMMERCIAL HARVARD BREWING COMPANY POSTER 1901: An antique commercial Harvard Brewing Company poster, 1901. The poster features a complex composition with a brewery at the bottom and people on a ship waving flags with the letter H, the Harvard logo
1 day LeftCOMMERCIAL HARVARD BREWING COMPANY POSTER 1901
US$50

Recommended Advertisements & Signs

View More
Rare Indian Lake Ohio Park Die Cut SSP Sign w/ Native American & Arrow Graphic: Amazing SSP (Single Sided Porcelain) die cut sign has day one color and gloss. The fields are exceptionally clean with a few factory imperfections and minor surface wear. The perimeter has small edge
1 day LeftRare Indian Lake Ohio Park Die Cut SSP Sign w/ Native American & Arrow Graphic
US$4,200
Outstanding Piggly Wiggly 8' SSP Neon Sign: SSP (Single Sided Porcelain) 2-piece with added neon sign has excellent color and gloss. The sign features a huge graphic of the famous Piggly Wiggly mascot "Mr. Pig" in the center field. The sign exh
1 day LeftOutstanding Piggly Wiggly 8' SSP Neon Sign
US$1,900
Scarce Rebel Gas 6' DSP Sign w/ Ring & Hangers Flag Logo: Rare DSP (Double Sided Porcelain) sign with factory ring has very good color and gloss. The display has general wear in the field with chips and one tiny non-factory hole in the center. The perimeter
1 day LeftScarce Rebel Gas 6' DSP Sign w/ Ring & Hangers Flag Logo
US$6,000
Scarce 1937 Drink Dr. Pepper Drink a Bite to Eat Emb. SST Sign w/ Bottle: SST (Single Sided Tin) embossed self-framed sign has very good color and shine. The field has small dings and scratches. The perimeter has similar wear with edge bends and small sealed non-factory hol
1 day LeftScarce 1937 Drink Dr. Pepper Drink a Bite to Eat Emb. SST Sign w/ Bottle
US$1,100
Pittsburgh Paints Embossed DSP Neon Sign w/ Sun Logo: Outstanding multi-piece embossed DSP (Double Sided Porcelain) neon sign with lighted glass panel has very good color and gloss. The display has light wear in the field with discoloration at the neon s
1 day LeftPittsburgh Paints Embossed DSP Neon Sign w/ Sun Logo
US$2,000
1933 Drink Coca Cola Confectionery SSP Sign: SSP (Single Sided Porcelain) self-framed Coke sign has superb color and gloss. The field is very clean overall with light storage wear and small chips in the lower field. The perimeter has chipping at
12 hrs Left1933 Drink Coca Cola Confectionery SSP Sign
US$900
June Kola "Now in Quarts!" Embossed SST Sign w/ Bottle: SST (Single Sided Tin) embossed self-framed sign with added frame has excellent color and shine. The field has light wear to the lower embossed lettering with a few small nicks. The upper field has an
12 hrs LeftJune Kola "Now in Quarts!" Embossed SST Sign w/ Bottle
US$550
Drink Coca Cola In Bottles Cleveland Neon Advertising Clock w/ Marquee: Cleveland Neon advertising Coke clock runs and lights up as it should. The inner face has light wear and the hands have paint loss on the minute hand. The outer face has general fading. The upper marq
1 day LeftDrink Coca Cola In Bottles Cleveland Neon Advertising Clock w/ Marquee
US$2,800
Ford V8 SSP Neon Sign w/ Wings: SSP (Single Sided Porcelain) multi-piece 3 color neon sign has very good color and gloss. The sign has a great look with an added flashing red V8 in the center field. The display has fine scratches wi
1 day LeftFord V8 SSP Neon Sign w/ Wings
US$1,600
Harley Davidson Motor Cycles Sales and Service DST Flange Sign w/ Logo: Outstanding DST (Double Sided Tin) flange sign has excellent color and shine. The display field is very clean with minor wear and small paint chips. The perimeter is similar with a small line of paint
1 day LeftHarley Davidson Motor Cycles Sales and Service DST Flange Sign w/ Logo
US$3,000
Rare Sunoco Gas Oil Die Cut SSP Sign w/ Arrow & Glass Marbles: Amazing SSP (Single Sided Porcelain) multi-piece sign with glass marbles and excellent color and gloss. The sign retains all of the glass marbles. The main sign is very clean with a tiny factory blemi
1 day LeftRare Sunoco Gas Oil Die Cut SSP Sign w/ Arrow & Glass Marbles
US$900
1960 Texaco Fuel Chief 1 SSP Gas Pump Plate Sign: SSP (Single Sided Porcelain) sign has very good color and gloss. The field is clean with slight discoloration to the yellow porcelain in the lower field. The perimeter has light wear with chips at mou
1 day Left1960 Texaco Fuel Chief 1 SSP Gas Pump Plate Sign
US$225
Carved and Gilded Wood and Wrought Iron, Trade Sign for Winemaker: Carved and Gilded Wood and Wrought Iron, Trade Sign for WinemakerLate 19th century. Trade sign for a winemaker. Grapes are 15 x 13 in.Ht. 21 in. Max W. 21 in.
14 hrs LeftCarved and Gilded Wood and Wrought Iron, Trade Sign for Winemaker
US$2,600
NOS Drink Coca Cola "Sign of Good Taste" 16" SST Button Sign: Superb NOS (New Old Stock) SST (Single Sided Tin) Coke button sign with rice paper has excellent color and shine. The sign retains the majority of the original rice paper which has tears along the edg
12 hrs LeftNOS Drink Coca Cola "Sign of Good Taste" 16" SST Button Sign
US$350
1948 Feel Fresh! Drink Orange Crush Emb. SST Sign w/ Crushy & Bottle: Impressive SST (Single Sided Tin) embossed self-framed sign has day one color and shine. The field is clean. The perimeter of the sign has wear to the self framed edge with the majority being along th
12 hrs Left1948 Feel Fresh! Drink Orange Crush Emb. SST Sign w/ Crushy & Bottle
US$450
1955 Phillips 66 Gasoline Die Cut SSP Neon Sign: SSP (Single Sided Porcelain) sign with added neon has excellent color and gloss. The field has small chips with flea bites in the lower left field. The perimeter has similar wear with minor rust stain
1 day Left1955 Phillips 66 Gasoline Die Cut SSP Neon Sign
US$1,700

Related Searches

Price Results
Auctions in Pasadena
TOP