Results for “demonstration model”

Explore all 35 upcoming results for “demonstration model”.View price results

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CHICAGO APPARATUS COMPANY CAST IRON STEAM LOCOMOTIVE CUTAWAY DEMONSTRATION MODEL: The Steam Locomotive Demonstrator Model is used to demonstrate the motion of a locomotive and how the steam power of the rods and steam chest work. A very interesting educational piece. It is in all o

Nov 10, 2026

CHICAGO APPARATUS COMPANY CAST IRON STEAM LOCOMOTIVE CUTAWAY DEMONSTRATION MODEL

Est.

US$200

-

US$500

US$100

Denver, PA

Dan Morphy Auctions

4.3

(1.4k)

EARLY SMOKEHOUSE DEMONSTRATION MODEL: 316. EARLY SMOKEHOUSE DEMONSTRATION MODEL American, late 19th to early 20th century. Finely constructed miniature smoking cabinet featuring sheet-metal panels, brass framework, pitched roof, and hinge

Nov 13, 2026

EARLY SMOKEHOUSE DEMONSTRATION MODEL

Est.

US$500

-

US$700

US$250

Vineland, NJ

Bertoia Auctions

4.8

(737)

TWO EARLY MECHANICAL DEMONSTRATION MODELS: 315. TWO EARLY MECHANICAL DEMONSTRATION MODELS American, late 19th century. Two distinct wooden and metal mechanical models. The first represents a paneled door or gate assembly fitted with iron hinge

Nov 13, 2026

TWO EARLY MECHANICAL DEMONSTRATION MODELS

Est.

US$400

-

US$800

US$200

Vineland, NJ

Bertoia Auctions

4.8

(737)

African Americana: Collection of Four Historical Photographs.: African Americana: Collection of Four Historical Photographs. A collection of four 10 x 8" black-and-white historical photographs, depicting: a welcome rally for Charlotta Bass during her 1950 campaig

Nov 5, 2026

African Americana: Collection of Four Historical Photographs.

Est.

US$300

-

US$500

US$150

Chicago, IL

Potter & Potter Auctions

4.7

(645)

PARRIS-DUNN WINDMILL SALESMANS SAMPLE: 330. PARRIS-DUNN WINDMILL SALESMANS SAMPLE American, by Parris-Dunn Corporation, Clarinda, Iowa, circa late 1930s?40s. Demonstration model illustrating the patented ?Slip the Wind? governing principle

Nov 13, 2026

PARRIS-DUNN WINDMILL SALESMANS SAMPLE

Est.

US$600

-

US$900

Current Bid - 2 bids

US$350

Vineland, NJ

Bertoia Auctions

4.8

(737)

RARE GIRANDONI MILITARY REPEATING AIR RIFLE, 1797.: Cal. 46. S# 1153. This is the same model taken by Lewis & Clark on their 1803-1806 expedition. The nearly identical "Lewis rifle" which has no markings is on display at the US Army Heritage & Educatio

Nov 8, 2026

RARE GIRANDONI MILITARY REPEATING AIR RIFLE, 1797.

Est.

US$20,000

-

US$40,000

US$10,000

Fairfield, ME

Poulin Antiques & Auctions

4.5

(323)

BRASS MECHANICAL GRAPPLE SALESMANS SAMPLE: 295. BRASS MECHANICAL GRAPPLE SALESMANS SAMPLE An intricately constructed brass demonstration model of an industrial grapple, designed for lifting and handling logs, timber, or other heavy materials.

Nov 13, 2026

BRASS MECHANICAL GRAPPLE SALESMANS SAMPLE

Est.

US$600

-

US$1,000

Current Bid - 2 bids

US$350

Vineland, NJ

Bertoia Auctions

4.8

(737)

EARLY HORSE-DRAWN ROAD GRADER MECHANICAL MODEL: 284. EARLY HORSE-DRAWN ROAD GRADER MECHANICAL MODEL American, circa 1910, a detailed metal demonstration model of a horse-drawn road grader, featuring a broad curved grading blade mounted beneath an a

Nov 13, 2026

EARLY HORSE-DRAWN ROAD GRADER MECHANICAL MODEL

Est.

US$600

-

US$900

US$300

Vineland, NJ

Bertoia Auctions

4.8

(737)

GAILLARD GRANJON MECHANICAL ROTARY CULTIVATOR: 279. GAILLARD GRANJON MECHANICAL ROTARY CULTIVATOR SAMESMAN'S MODEL French, late 19th to early 20th century. An unusual agricultural demonstration model for early mechanized soil cultivation, marked ?

Nov 13, 2026

GAILLARD GRANJON MECHANICAL ROTARY CULTIVATOR

Est.

US$1,000

-

US$1,500

US$500

Vineland, NJ

Bertoia Auctions

4.8

(737)

TROLLEY DESTINATION SIGN CHANGER DISPLAY MODEL: 275. TROLLEY DESTINATION SIGN CHANGER DISPLAY MODEL Mechanical demonstration model illustrating a hand-operated destination sign changing system for early streetcars and trolleys, wooden construction

Nov 13, 2026

TROLLEY DESTINATION SIGN CHANGER DISPLAY MODEL

Est.

US$500

-

US$1,000

US$250

Vineland, NJ

Bertoia Auctions

4.8

(737)

M. A. HELLER AUTOMATIC GRAIN BINDER MECHANICAL: 298. M. A. HELLER AUTOMATIC GRAIN BINDER MECHANICAL SALESMAN'S MODEL Late 19th century mechanical demonstration model of an automatic grain-binding apparatus, invented by M. A. Heller of Littlestown,

Nov 13, 2026

M. A. HELLER AUTOMATIC GRAIN BINDER MECHANICAL

Est.

US$800

-

US$1,600

US$400

Vineland, NJ

Bertoia Auctions

4.8

(737)

AUTOMATIC RAILWAY SWITCH INVENTORS MODEL: 306. AUTOMATIC RAILWAY SWITCH INVENTORS MODEL An elaborate working-scale mechanical model of an improved railroad track-switching mechanism, U.S. Patent No. 798,515, August 29, 1905, identified with H

Nov 13, 2026

AUTOMATIC RAILWAY SWITCH INVENTORS MODEL

Est.

US$600

-

US$1,000

US$300

Vineland, NJ

Bertoia Auctions

4.8

(737)

CLAMSHELL DREDGING BUCKET SALESMANS SAMPLE: 318. CLAMSHELL DREDGING BUCKET SALESMANS SAMPLE Finely constructed metal demonstration model of a clamshell grab bucket, designed for use with cranes and dredging equipment, features a sophisticated a

Nov 13, 2026

CLAMSHELL DREDGING BUCKET SALESMANS SAMPLE

Est.

US$400

-

US$800

Current Bid - 2 bids

US$250

Vineland, NJ

Bertoia Auctions

4.8

(737)

MYRON MILES AUTOMATIC FARM GATE SALESMANS MODEL: 300. MYRON MILES AUTOMATIC FARM GATE SALESMANS MODEL An early wooden demonstration model of Myron Miles' patented automatic farm gate, designed to facilitate passage through agricultural enclosures wi

Nov 13, 2026

MYRON MILES AUTOMATIC FARM GATE SALESMANS MODEL

Est.

US$600

-

US$800

US$300

Vineland, NJ

Bertoia Auctions

4.8

(737)

J. W. MCPHERSON BRAKE LEVER PATENT MODEL: 274. J. W. MCPHERSON BRAKE LEVER PATENT MODEL Patented August 31, 1886, by John W. McPherson of Moline, Illinois. Patent No. 348,229, metal mechanical patent model illustrating an improved wagon brake

Nov 13, 2026

J. W. MCPHERSON BRAKE LEVER PATENT MODEL

Est.

US$600

-

US$900

US$300

Vineland, NJ

Bertoia Auctions

4.8

(737)

CLAMSHELL DREDGING BUCKET SALESMANS SAMPLE: 320. CLAMSHELL DREDGING BUCKET SALESMANS SAMPLE A finely constructed metal demonstration model of a clamshell grab bucket, representing equipment used in dredging, excavation, and industrial material

Nov 13, 2026

CLAMSHELL DREDGING BUCKET SALESMANS SAMPLE

Est.

US$400

-

US$800

Current Bid - 2 bids

US$250

Vineland, NJ

Bertoia Auctions

4.8

(737)

UTICA RED SQUARE BOILER SALESMANS SAMPLE: 288. UTICA RED SQUARE BOILER SALESMANS SAMPLE Utica Radiator Corporation, Utica, New York, metal demonstration model of the company's Red Square sectional heating boiler, featuring individual radiator

Nov 13, 2026

UTICA RED SQUARE BOILER SALESMANS SAMPLE

Est.

US$400

-

US$800

Current Bid - 1 bid

US$200

Vineland, NJ

Bertoia Auctions

4.8

(737)

WOODEN RAILWAY TRUCK DEMO MODEL: 250. WOODEN RAILWAY TRUCK DEMO MODEL American, late 19th to early 20th century. Wooden demonstration model of a four-wheel railway truck or carriage assembly, featuring turned wooden wheels with groov

Nov 13, 2026

WOODEN RAILWAY TRUCK DEMO MODEL

Est.

US$150

-

US$300

US$80

Vineland, NJ

Bertoia Auctions

4.8

(737)

BROWNING M1919A4 OVERSIZE EDUCATION MODEL: 242. BROWNING M1919A4 OVERSIZE EDUCATION MODEL | Impressive enlarged U.S. military instructional presentation display model of the Browning M1919A4 .30-caliber machine gun, constructed at more than do

Starts in 11 hrs

BROWNING M1919A4 OVERSIZE EDUCATION MODEL

Est.

US$2,000

-

US$4,000

Current Bid - 1 bid

US$1,000

Vineland, NJ

Bertoia Auctions

4.8

(737)

J. E. LONERGAN SAFETY VALVE DISPLAY MODEL: 326. J. E. LONERGAN SAFETY VALVE DISPLAY MODEL American, by J. E. Lonergan & Co., Philadelphia, circa early 20th century. Finely machined brass cutaway demonstration model of a spring-loaded steam saf

Nov 13, 2026

J. E. LONERGAN SAFETY VALVE DISPLAY MODEL

Est.

US$300

-

US$500

US$150

Vineland, NJ

Bertoia Auctions

4.8

(737)

REVERSIBLE RAILWAY RAIL PATENT MODEL: 251. REVERSIBLE RAILWAY RAIL PATENT MODEL American, patented May 17, 1904, by Winfield Scott Corpman of Harrisburg, Pennsylvania. Wooden demonstration model illustrating a reversible railway rail, des

Nov 13, 2026

REVERSIBLE RAILWAY RAIL PATENT MODEL

Est.

US$400

-

US$600

US$200

Vineland, NJ

Bertoia Auctions

4.8

(737)

BONZANO RAIL-JOINT SALESMANS SAMPLE: 252. BONZANO RAIL-JOINT SALESMANS SAMPLE American, circa 1897?1900. Railroad engineering demonstration model illustrating Adolphus Bonzano's patented rail-joint system, designed to strengthen the conn

Nov 13, 2026

BONZANO RAIL-JOINT SALESMANS SAMPLE

Est.

US$300

-

US$500

Current Bid - 1 bid

US$150

Vineland, NJ

Bertoia Auctions

4.8

(737)

RUUD NO. 25 HOT WATER HEATER SALESMANS SAMPLE: 289. RUUD NO. 25 HOT WATER HEATER SALESMANS SAMPLE Ruud Manufacturing Company, Pittsburgh, Pennsylvania, early 20th century. Miniature cast-iron demonstration model of a gas-fired water heater, finish

Nov 13, 2026

RUUD NO. 25 HOT WATER HEATER SALESMANS SAMPLE

Est.

US$300

-

US$500

Current Bid - 1 bid

US$150

Vineland, NJ

Bertoia Auctions

4.8

(737)

NORTON DOOR CLOSER SALESMANS SAMPLE: 335. NORTON DOOR CLOSER SALESMANS SAMPLE American, by Norton Door Check Co., circa 1910s?20s. Finely machined metal demonstration model illustrating an early automatic door-closing mechanism, featurin

Nov 13, 2026

NORTON DOOR CLOSER SALESMANS SAMPLE

Est.

US$300

-

US$500

Current Bid - 1 bid

US$150

Vineland, NJ

Bertoia Auctions

4.8

(737)

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