Reference Library

Keystone Watch Case Co. Case Trademark

Crown 14 K. Filled (Keystone Watch Case Co.)

Trademark Manufacturer:

Keystone Watch Case Co.

Manufacturer Years Active:

1880 - 1956

Trademark Markings:

Crown 14 K. Filled

Trademark Issued:

November 13, 1900

Traits:

Gold-Filled

14K Gold-Filled

Other Keystone Watch Case Co. Trademarks