Reference Library

Keystone Watch Case Co. Case Trademark

[Crown and Scales] (Keystone Watch Case Co.)

Trademark Manufacturer:

Keystone Watch Case Co.

Manufacturer Years Active:

1880 - 1956

Trademark Markings:

[Crown and Scales]

Trademark Issued:

August 08, 1911

Traits:

Gold-Filled

14K Gold-Filled

Other Keystone Watch Case Co. Trademarks