Lot 0280

Florence Knoll Reupholstered 3 Seat Sofa for Knoll International

Florence Knoll Sale History

View Price Results for Florence Knoll

Sold

Florence Knoll 575 Sofa Couch. Knoll International Label.: Florence Knoll 575 Sofa Couch. Knoll International Label. Dimensions: H: 30 inches: W: 90 inches: D: 28 inches - Seat Height: 18 inches --- Delivery Offer: Uniques offers curbside delivery to NYC, Man

2023Florence Knoll 575 Sofa Couch. Knoll International Label.See Sold Price

Sold

Florence Knoll 575 sofa Knoll International Label.: Florence Knoll 575 sofa Knoll International Label. Dimensions: H: 30 inches: W: 89 inches: D: 29.5 inches --- Delivery Offer: Uniques offers curbside delivery to NYC, Manhattan, Close Brooklyn, Hoboke

2023Florence Knoll 575 sofa Knoll International Label.See Sold Price

Sold

Florence Knoll (American, 1917-2019), Three-Seat Sofa: Florence Knoll (American, 1917-2019), Three-Seat SofaKnoll Associates, circa 1970, original tone boucle fabric upholstery, tufted back and seat cushions, polished steel legs. 26 x 90 x 31 in. Original

2023Florence Knoll (American, 1917-2019), Three-Seat SofaSee Sold Price

Sold

FLORENCE KNOLL MODEL 26 SOFA IN MICROSUEDE: Rare Florence Knoll three-seat sofa with tapered wood legs, c. 1950's-1960's; with contemporary blush eggshell microsuede upholstery. Dimensions: H 32" x W 90.5" x D 34" x SH 19.5" Condition: Light su

2023FLORENCE KNOLL MODEL 26 SOFA IN MICROSUEDESee Sold Price

Sold

Florence Knoll 3 seat Parallel Bar Sofa: Knoll, Florence (American, 1917-2019), Knoll Associates USA, 1954, oatmeal toned upholstery, matte and chrome-plated steel, enameled steel, 29 h x 84 w x 30 d in (74 x 213 x 76 cm), Literature: Knoll

2023Florence Knoll 3 seat Parallel Bar SofaSee Sold Price

Sold

Mid Century FLORENCE KNOLL Sofa: 31" H to back x 17" H to seat x 90.5" W x 28" D

2023Mid Century FLORENCE KNOLL SofaSee Sold Price

Sold

Florence Knoll, Sofa: FLORENCE KNOLLSofa, model no. 26, 1950sFabric and foam over wooden frame, iron. Manufactured by Knoll, USA.29" H x 80" W x 29" DSeat height: 15"

2023Florence Knoll, SofaSee Sold Price

Sold

Vintage Florence Knoll sofa with walnut base and original upholstery. Professionally cleaned: Vintage Florence Knoll sofa with walnut base and original upholstery. Professionally cleaned90" x 32" x 16" floor to seat

2023Vintage Florence Knoll sofa with walnut base and original upholstery. Professionally cleanedSee Sold Price

Sold

Florence Knoll Convertible Sofa Bed: Florence Knoll Convertible Sofa Bed, 1970s, black enameled steel and upholstery, the proper right arm slides forward, allowing the seat back to pivot back 6 inches, h. 31 in., w. 83 in., d. 32 in.

2022Florence Knoll Convertible Sofa BedSee Sold Price

Sold

Knoll Manner Modern Upholstered Sofa: Florence Knoll (American, 1917-2019) Style Modern Upholstered Sofa, rectangular with three seats above tubular steel legs. 28" H x 88" L x 39" D; seat: 18" H. Provenance: From a Brooklyn townhouse. Ke

2024Knoll Manner Modern Upholstered SofaSee Sold Price

Sold

Adrian Pearsall sofa model 102-s Craft Associates. Newly reupholstered Knoll classic Boucle natural: Adrian Pearsall sofa model 102-s Craft Associates. Newly reupholstered Knoll classic Boucle natural Dimensions: H: 30 inches: W: 104 inches: D: 31 inches - Seat Height: 16 inches --- -- We offer curbs

2023Adrian Pearsall sofa model 102-s Craft Associates. Newly reupholstered Knoll classic Boucle naturalSee Sold Price

Sold

Ludwig Mies van der Rohe (German-American, 1886-1969) Sofa Knoll International, USA: Ludwig Mies van der Rohe (German-American, 1886-1969) Sofa Knoll International, USA leather, rosewood H 30 1/2 x W 90 1/4 x D 32 inches.

2023Ludwig Mies van der Rohe (German-American, 1886-1969) Sofa Knoll International, USASee Sold Price

Sold

Florence Knoll, Sofa, model 2577: Florence Knoll Sofa, model 2577 Knoll AssociatesUSA, 1955Naugahyde, chrome-plated steel 29.5 h x 90.75 w x 27 d in (75 x 231 x 69 cm) Provenance: Wright, Modern Desig

2023Florence Knoll, Sofa, model 2577See Sold Price

Sold

Florence Knoll - Sofa: A vintage sofa by Florence Knoll for Knoll. Vintage upholstery and chrome plated steel frame. Label on underside. 29.5 x 90 x 31.5. All measurements are in inches.

2023Florence Knoll - SofaSee Sold Price

Sold

Florence Knoll - Sofa: A vintage sofa by Florence Knoll, Model 2577, for Knoll Associates.

2024Florence Knoll - SofaSee Sold Price

Sold

Florence Knoll Sofa: A Mid Mod Florence Knoll for Knoll sofa. Original Grey woven upholstery on a Chrome base. Original "Knoll" label under cushions. Some wear to upholstery, foam cushions hardened. 62" long. ESTIMATE $60

2023Florence Knoll SofaSee Sold Price

Related Sofas & Settees

CHARLES PFISTER FOR KNOLL LEATHER SOFA: Russet leather three-seat sofa by Charles Pfister for Knoll (labelled). Condition: Scuffs and scratches; a few marks to leather. Measures: H 24" x W 86" x D 33"

6 days LeftCHARLES PFISTER FOR KNOLL LEATHER SOFA

$500

AFRA UND TOBIA SCARPA DREISITZER LEDER SOFA MODELL 'BASTIAN: AFRA UND TOBIA SCARPA 1937 bzw. 1935 Montebelluna bzw. Venedig DREISITZER LEDER SOFA MODELL 'BASTIANO' Italien / USA Gavina, Knoll international Entwurf 1960 Holzrahmen, Polsterkissen m. braunem Leder

Jun 01, 2024AFRA UND TOBIA SCARPA DREISITZER LEDER SOFA MODELL 'BASTIAN

€360

Knoll Style Sage Green Velvet Upholstered Sofa: Knoll Style Sage Green Velvet Upholstered Two-Seat Sofa, apparently unmarked. 33" H x 62" W x 38" D; seat: 19" H. Provenance: From the 50 East 89th Street estate of a 20th century photography collecto

Jun 05, 2024Knoll Style Sage Green Velvet Upholstered Sofa

$275

RARE ATTR. WALTER KNOLL MOHAIR SOFA, C. 1950'S: Attributed to Walter Knoll for Knoll Antimott, Germany, c. 1950's. Legs appear to be beech or cherry. Dimensions: H 31.25" x W 78" x D 31.5" x SH 16.5". Condition: Light surface dust; a few faint mark

4 days LeftRARE ATTR. WALTER KNOLL MOHAIR SOFA, C. 1950'S

$400

LUDWIG MIES VAN DER ROHE DAYBED / LIEGE MODELL 'BARCELONA': LUDWIG MIES VAN DER ROHE 1886 Aachen - 1969 Chicago DAYBED / FLAT COUCH MODEL 'BARCELONA' USA, Knoll international, designed in 1930, produced around 1990 Wooden frame, metal partly chrome-plated, bla

Jun 01, 2024LUDWIG MIES VAN DER ROHE DAYBED / LIEGE MODELL 'BARCELONA'

€500

Art Deco Black Velvet Sofa: An Art Deco period black velvet sofa having wooden platform carved feet carved, down filled seat cushions. Sofa has been reupholstered and restored. Seat height: 15"

Jun 08, 2024Art Deco Black Velvet Sofa

$500

Ludwig Mies Van Der Rohe Barcelona Daybed: Knoll, Germany. Mies van Der Rohe designed to welcome the King and Queen of Spain in 1929. Featuring 72 individual panels of hand-welted and hand-tufted leather, attached to hand polished steel frame.

Jun 05, 2024Ludwig Mies Van Der Rohe Barcelona Daybed

$1,500

Antique 18th/19thC Louis XVI Period French Paint Decorated Sofa: Antique 18th/19thC Louis XVI Period French Paint Decorated Sofa . Ca. late 18th to early 19thC. Very good reupholstered condition. Beautiful piece, hand carved with gilt gold highlights over a mostly

3 days LeftAntique 18th/19thC Louis XVI Period French Paint Decorated Sofa

$300

A CONTEMPORARY YELLOW UPHOLSTERED 'PARKER KNOLL' STYLE TWO SEATER SETTEE with floral damask: A CONTEMPORARY YELLOW UPHOLSTERED 'PARKER KNOLL' STYLE TWO SEATER SETTEE with floral damask upholstery, five loose cushions, on short block feet and brass caps and castors

Jun 11, 2024A CONTEMPORARY YELLOW UPHOLSTERED 'PARKER KNOLL' STYLE TWO SEATER SETTEE with floral damask

€300

A CONTEMPORARY BEECHWOOD FRAMED AND YELLOW UPHOLSTERED 'PARKER KNOLL' STYLE TWO SEATER SETTEE with: A CONTEMPORARY BEECHWOOD FRAMED AND YELLOW UPHOLSTERED 'PARKER KNOLL' STYLE TWO SEATER SETTEE with five loose cushions, on short block feet and brass caps and castors. 175cm wide, 120cm wide, 88cm hig

Jun 11, 2024A CONTEMPORARY BEECHWOOD FRAMED AND YELLOW UPHOLSTERED 'PARKER KNOLL' STYLE TWO SEATER SETTEE with

€300

New York Skyline Motif Three Seat Sofa: New York Skyline Motif Upholstered Three Seat Sofa, cream ultrasuede with canvas cushions printed with an early 20th century black and white photo of the skyline of Manhattan, studded with silver-tone

Jul 09, 2024New York Skyline Motif Three Seat Sofa

$100

Alberto Colombi e Gian Paolo Guzzetti A BONZO TWO SEAT SOFA: Alberto Colombi e (Sec. XX) Gian Paolo Guzzetti (Sec. XX)   A «BONZO» TWO SEAT SOFA, WOODEN STRUCTURE, LEATHER UPHOLSTERY   DIVANO A DUE POSTI, MODELLO BONZO struttura in legno i

Jun 13, 2024Alberto Colombi e Gian Paolo Guzzetti A BONZO TWO SEAT SOFA

€1,000

DE SEDE DS-86 BUFFALO LEATHER THREE-SEAT SOFA: Exceptional De Sede Model DS-86 three-seat sofa in channel-stitched buffalo leather. Switzerland, c. 1970's. Dimensions: H 30.25" x W 73.25" x D 35" x SH 16" Condition: Scratches and scuffs from use.

4 days LeftDE SEDE DS-86 BUFFALO LEATHER THREE-SEAT SOFA

$1,100

DE SEDE DS-84 BUFFALO LEATHER 3-SEAT SOFA: Luxurious Model DS-84 three-seat sofa in rich patinated buffalo leather, produced by De Sede, Switzerland, c. 1970's. Dimensions: H 31" x W 72.25" x D 35" x SH 15.25". Condition: Rich natural patinati

4 days LeftDE SEDE DS-84 BUFFALO LEATHER 3-SEAT SOFA

$2,250

DE SEDE DS-86 BUFFALO LEATHER TWO-SEAT SOFA: De Sede Model DS-86 two-seat sofa in channel-stitched buffalo leather. Switzerland, c. 1970's. Dimensions: H 30.25" x W 54.25" x D 35" x SH 16". Condition: Scratches and scuffs throughout consistent w

4 days LeftDE SEDE DS-86 BUFFALO LEATHER TWO-SEAT SOFA

$950

PERCIVAL LAFER S-1 SOFA IN ROSEWOOD & LEATHER: Rare Brazilian Modernist three-seat sofa in solid rosewood and curry leather, from the S-1 Series designed by Percival Lafer for Lafer, S. A. Remnants of original hand-numbered labels under seat cushi

4 days LeftPERCIVAL LAFER S-1 SOFA IN ROSEWOOD & LEATHER

$400

More Items from Florence Knoll

PAIR RICHARD SCHULTZ KNOLL OUTDOOR LOUNGE CHAIRS: (2) Richard Schultz outdoor adjustable chaise lounge chairs from the aluminum Leisure Collection. Schultz originally designed the aluminum Leisure Collection in 1966 when Florence Knoll moved to a sea

4 days LeftPAIR RICHARD SCHULTZ KNOLL OUTDOOR LOUNGE CHAIRS

$450

PAIR RICHARD SCHULTZ KNOLL OUTDOOR TABLES: (2) Richard Schultz outdoor coffee tables from the aluminum Leisure Collection. Schultz originally designed the aluminum Leisure Collection in 1966 when Florence Knoll moved to a seaside home in Flori

4 days LeftPAIR RICHARD SCHULTZ KNOLL OUTDOOR TABLES

$350

PAIR RICHARD SCHULTZ KNOLL OUTDOOR ARMCHAIRS: (2) Richard Schultz outdoor arm chairs from the aluminum Leisure Collection. Schultz originally designed the aluminum Leisure Collection in 1966 when Florence Knoll moved to a seaside home in Florida.

4 days LeftPAIR RICHARD SCHULTZ KNOLL OUTDOOR ARMCHAIRS

$250

PAIR RICHARD SCHULTZ KNOLL OUTDOOR LOUNGE CHAIRS: (2) Richard Schultz outdoor chaise lounge chairs from the aluminum Leisure Collection. Schultz originally designed the aluminum Leisure Collection in 1966 when Florence Knoll moved to a seaside home i

4 days LeftPAIR RICHARD SCHULTZ KNOLL OUTDOOR LOUNGE CHAIRS

$475

(4) RICHARD SCHULTZ KNOLL OUTDOOR ARM CHAIRS: (4) Richard Schultz outdoor arm chairs from the aluminum Leisure Collection. Schultz originally designed the aluminum Leisure Collection in 1966 when Florence Knoll moved to a seaside home in Florida.

4 days Left(4) RICHARD SCHULTZ KNOLL OUTDOOR ARM CHAIRS

$500

Florence Knoll - Hanging Cabinet: A Florence Knoll hanging cabinet with drop down doors and leather pulls Dimensions:17x72x15

6 days LeftFlorence Knoll - Hanging Cabinet

$800

Florence Knoll - Hanging Cabinet: A Florence Knoll hanging cabinet with sliding doors and leather pulls Dimensions:17x72x15

6 days LeftFlorence Knoll - Hanging Cabinet

$800

FLORENCE KNOLL HAENGE SIDEBOARD MODELL '121': FLORENCE KNOLL 1917 Saginaw - 2019 Coral Gables HANGING CABINET MODEL '121' USA, Knoll international, design of 1947 Wood veneer, East Indian rosewood, chrome-plated metal, genuine leather handles, in

Jun 01, 2024FLORENCE KNOLL HAENGE SIDEBOARD MODELL '121'

€330

FLORENCE KNOLL SIDEBOARD MODELL '2544': FLORENCE KNOLL 1917 Saginaw - 2019 Coral Gables SIDEBOARD MODEL '2544' USA, Knoll international, designed in 1961 Chrome-plated metal, white varnished wood, veneered inside, most likely maple, marble

Jun 01, 2024FLORENCE KNOLL SIDEBOARD MODELL '2544'

€700

A design dining table by Florence Knoll, walnut table top on a chromed metal frame, H 72 - W 200 - D: A design dining table by Florence Knoll, walnut table top on a chromed metal frame, H 72 - W 200 - D 145 cmNo mark found.

4 days LeftA design dining table by Florence Knoll, walnut table top on a chromed metal frame, H 72 - W 200 - D

€1,000

Florence Knoll & Richard Schultz for Knoll Nightstand: Florence Knoll & Richard Schultz for Knoll nightstand, American, first designed 1960's. Dark Finish walnut frame, white laminate table top. Apparently unlabeled. 18 x 19.5 x 19.5.

Jun 08, 2024Florence Knoll & Richard Schultz for Knoll Nightstand

$200

FLORENCE KNOLL QUADRATISCHER COUCHTISCH MODELL '2510': FLORENCE KNOLL 1917 Saginaw - 2019 Coral Gables SQUARE COFFEE TABLE MODEL '2510' USA, Knoll international, design 1958 Chrome-plated steel, 'Arabescato' marble. H. approx. 41 cm, W, approx. 60 cm, D.

Jun 01, 2024FLORENCE KNOLL QUADRATISCHER COUCHTISCH MODELL '2510'

€100

Florence Knoll Mid-Century Rosewood Sideboard: Florence Knoll Mid-Century Modern Rosewood Sideboard, with five drawers and three interior shelves, chrome legs, marked "Knoll Studio / Florence Knoll" to leg. 25.5" H x 75" W x 18" D. Provenance: Fro

Jun 23, 2024Florence Knoll Mid-Century Rosewood Sideboard

$300

Florence Knoll for Knoll Studio Model 2530-6 Bench: Florence Knoll (American, 1917-2019) for Knoll Studio Model 2530-6 Bench, originally designed 1961, signed and marked "Knoll Studio" to leg, chromed metal base with brown leather upholstered seat. 17"

Jun 23, 2024Florence Knoll for Knoll Studio Model 2530-6 Bench

$400

Florence Knoll for Knoll Studio Bench: Florence Knoll (American, 1917-2019) for Knoll Studio Bench, signed and marked "Knoll Studio" to leg, chromed metal base with brown leather upholstered seat. 17" H x 36.5" W x 20" D. Provenance: From

Jun 23, 2024Florence Knoll for Knoll Studio Bench

$100

Jun 23, 2024Florence Knoll for Knoll Studio Bench

$100

Recommended Furniture

Charles & Ray Eames MCM Lounge Chair & Ottoman by Herman Miller: Charles & Ray Eames MCM Lounge Chair & Ottoman by Herman Miller. This is a three dimensionally shaped plywood shell with a distinctive rosewood/teak veneer. Upholstered in black leather, swivel base i

Jul 07, 2024Charles & Ray Eames MCM Lounge Chair & Ottoman by Herman Miller

$800

Piero Fornasetti & Gio Ponti Demi-Secretaire: Piero Fornasetti (Italian, 1913-1988) and Gio Ponti (Italian, 1891-1979) Demi-Secretaire, from the "Architettura" series, designed circa 1950, executed circa 1990s, with Fornasetti label to top drawer

Jun 09, 2024Piero Fornasetti & Gio Ponti Demi-Secretaire

$1,800

French Provincial Louis XV Style Armoire: French Provincial Louis XV Style Armoire A French Provincial Louis XV style armoire dresser with large brass hinges and other details. Signs of termite damage mostly on sides. 58" wide. 24.5" deep. 99

3 days LeftFrench Provincial Louis XV Style Armoire

$10

Frank Lloyd Wright for Henredon Taliesin King Headboard: Frank Lloyd Wright for Henredon Taliesin King Headboard A rare mid century modern "Taliesin" mahogany king size headboard bookcase designed by Frank Lloyd Wright for Henredon Heritage with sliding doo

2 days LeftFrank Lloyd Wright for Henredon Taliesin King Headboard

$10

Herter Brothers Pair of Victorian Heavily Carved Parlor Chairs, 1860's: These rare chairs are heavily carved with floral sprays with ribbons, inlaid musical instruments, acanthus leaves and intaglio accents. The walnut chairs retain their original 1860's finish and lustro

5 days LeftHerter Brothers Pair of Victorian Heavily Carved Parlor Chairs, 1860's

$125

Antonio Citterio B&B Italia Oak Chest of 6 Drawers: Antonio Citterio for B&B Italia Oak Chest of Six Drawers, nickel base, label to underside. 23.5" H x 73.25" W x 23.5" D. Provenance: From a Chelsea Collection. Keywords: Designer, Furniture, Modern, I

Jun 09, 2024Antonio Citterio B&B Italia Oak Chest of 6 Drawers

$350

Paul McCobb Brass and Mahogany Room Divider: Paul McCobb Brass and Mahogany Room Divider A mid century modern mahogany and brass room divider entertainment center bookcase or credenza designed by Paul McCobb for Calvin. Professionally refinished

2 days LeftPaul McCobb Brass and Mahogany Room Divider

$305

Antique Louis XIII Quebec Small Diamond Point Armoire: Antique Louis XIII Quebec Small Diamond Point Armoire. With St Andrews Cross carved panels on fronts of doors, hand forged hinges and dowel construction. 58 inches H x 58 W x 17.5 deep.

1 day LeftAntique Louis XIII Quebec Small Diamond Point Armoire

CA$850

6 days LeftCHARLES PFISTER FOR KNOLL LEATHER SOFA

$500

Antique Stickley Oak Double Drawer Desk with Organizer Top: Antique signed red mark Stickley oak double drawer desk with organizer top. Original finish, needs cleaning. A rare example of a Stickley desk. Measures 27" tall x 38" wide x 23" deep.

5 days LeftAntique Stickley Oak Double Drawer Desk with Organizer Top

$200

Charles & Ray Eames for Herman Miller Lounge Chair: Charles and Ray Eames (American, 1907-1978; 1912-1988) for Herman Miller Rosewood and Black Leather Lounge Chair. 30.5" H x 33" W x 30" D; seat: 13" H. Provenance: From a Plainview, N.Y. Estate. Keywo

Jun 09, 2024Charles & Ray Eames for Herman Miller Lounge Chair

$500

T.H. ROBSJOHN GIBBINGS Style Klismos Chairs, Set of 6: Set of 6 Klismos Chairs in the style of T.H. Robsjohn Gibbings. Each measure 35.5" H to back x 16.5" H to seat x 21" W x 19" D.

Jun 02, 2024T.H. ROBSJOHN GIBBINGS Style Klismos Chairs, Set of 6

$950

3 Pc Broyhill Brasilia Bedroom Set: NOT ELIGIBLE FOR IN-HOUSE SHIPPING. Dresser with mirror 66" wide X 19" deep X 71" high. Tall chest 44" wide X 16" deep X 49-3/4" high. Night stand 22" wide X 15" deep X 22" high. All Pcs have some lig

May 31, 20243 Pc Broyhill Brasilia Bedroom Set

$350

Danish Modern Teak Wall Unit: Danish Modern Teak Wall Unit, stamped "Made in Denmark", with three tiers divided into three cabinets above one cabinet and four drawer chest to front, two cabinets to back, with multi-level shelves t

Jun 09, 2024Danish Modern Teak Wall Unit

$325

Ralph Lauren Home Collection Brook Street Black Leather Chesterfield Sofa, Oversized: Ralph Lauren Home Collection Brook Street Black Leather Chesterfield Sofa, Oversized (Make Note of Seat Depth), Like New Condition and Impressive in Person, Upholstered in High Quality Black Leather w

Jun 01, 2024Ralph Lauren Home Collection Brook Street Black Leather Chesterfield Sofa, Oversized

$1,100

Frank Lloyd Wright (American, 1867-1969) Taliesin Cocktail Table and Six Stools: Frank Lloyd Wright (American, 1867-1969) Taliesin Cocktail Table and Six StoolsHeritage Henredon, circa 1955. Mahogany, table model 453-C and chair models 452-A.Table: 17 1/4 x 42 x 48 1/2 in.Shipping

6 days LeftFrank Lloyd Wright (American, 1867-1969) Taliesin Cocktail Table and Six Stools

$1,900

Florence Knoll Reupholstered 3 Seat Sofa for Knoll International

Item Details

Description

Knoll, Florence (American, 1917-2019), Mid Century Modern 3 Seat Sofa for Knoll International, c.1960s, tapered wood legs, recently reupholstered in dark orange fabric, unmarked, 29.5 x 91 x 29 inches.

Condition

In good condition, legs with light scratching and age appropriate wear; new fabric in excellent shape. Merchandise will be packed and transported by the purchaser at their own risk and expense. A list of recommended shippers is on our website: https://www.conceptgallery.com/auctions/shipping/ .

Buyer's Premium

Florence Knoll Reupholstered 3 Seat Sofa for Knoll International

Name: Florence Knoll Reupholstered 3 Seat Sofa for Knoll International
Brand: Florence Knoll
SKU: 165248115
Price: 900 USD
Availability: InStock

Estimate $500 - $800

See Sold Price

Starting Price $300

Sell a Similar Item

34 bidders are watching this item.

Shipping & Pickup Options

Item located in Pittsburgh, PA, us

See Policy for Shipping

Local Pickup Available

Payment

Accepts seamless payments through LiveAuctioneers

Concept Art Gallery

TOP RATED

Pittsburgh, PA, United States

488 Reviews

8,771 Followers