Pocket Watch Database

Keystone Watch Case Co. 18K
Watch Case Marking for Keystone Watch Case Co. 18K: Keystone
18K
[Keystone Block]
Trade Mark

Note: Case manufacturers modified markings over time. As a result, the image above is simply a representation of one particular marking used by the company. Your case marking may differ based on the production era and other parameters.

18K

Database ID:PWDB-356
Case Grade:18K
Material:Gold
Gold Content:18K
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9 Admirations
Serial No.: #4137138
Manufacturer:Waltham
Grade:No. 3
Size:18s
Model:1883
Jewels:11j
Setting:Lever
Finish:Frosted
Est. Date:December 1889 - December 1890
Case Material:Gold
Gold Karat:18
Case Serial:1186230
Added By:Slederman Profile Image Slederman