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Lancaster Watch Co.

Keystone Watch Company Celluloid Dial: Flat Metal Reverse

By Nathan Moore

Pictured: Flat Metal Reverse of Celluloid Watch Dial from the Keystone Watch Company One of the primary claims of distinction in Abraham Bitner’s 1881 patent application for his paper dial is the presence of a flat back. This characteristic differentiated his process from other similar...

Dials , History , Lancaster Watch Co. , Patents & Innovations

The Keystone Locomotive Celluloid Dial by the Keystone Watch Company

By Nathan Moore

Pictured: Celluloid Keystone Locomotive Watch Dial from the Keystone Watch Company Another variation of the celluloid dials produced by the Keystone Watch Company features the front of a locomotive enclosed.

Dials , History , Lancaster Watch Co. , Patents & Innovations

The Paper Substrate on Keystone Watch Company Celluloid Dials

By Nathan Moore

Pictured: Edge of Celluloid Watch Dials from the Keystone Watch Company Showing Paper Substrate Despite the failure of Abraham Bitner’s patented paper dial at the Lancaster Watch Company during the.

Abraham Bitner’s Patented Paper Watch Dial

By Nathan Moore

In Dials , Lancaster Watch Co. , Patents & Innovations

Pictured: Abraham Bitner’s Patented Paper Watch Dial on a Lancaster Watch Company “Comet” Movement [Courtesy of Heritage Auctions] Before Abraham Bitner used celluloid in the late 1880s as an alternative material to create inexpensive dials at the Keystone Watch Company, he first experimented with a...

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