Jewelry & gold · a closer look
Keystone Watch Case Co. mark: Keystone, Keystone Watch Case Co., Keystone Co, The K.W.C.Co.
Mark details
- Period
- Undated
- Wording
- Keystone, Keystone Watch Case Co., Keystone Co, The K.W.C.Co.
Notes
"Keystone", "Keystone Watch Case Co.", "Keystone Co", "The K.W.C.Co."
Other Keystone Watch Case Co. marks