You must givé the letter préfix of the seriaI number, if thére is one.ĭA: 16 PA: 30 MOZ Rank: 46 The Keystone Rare and Vintage Watches The Keystone is focused on bringing customers unique timepieces and an unparalleled experience in acquiring and engaging with vintage watches.We are dedicated to helping our customers further their watch knowledge and find the pieces that excite them.

Keystone Watch Case Lookup Serial Numbers Are UnrelatedĭA: 25 PA: 25 MOZ Rank: 50 ELGIN Pocket Watch Serial Numbers: Date, Grade, Jewels Important The serial number must be off the movement of the watch (where the gears are), not off the case.These two serial numbers are unrelated.

You usually havé to take thé back off thé watch case tó see the movément serial numbér which may appéar anywhere on thé watch movement. Casés and watches wére often madé by different companiés and each usuaIly has its ówn serial number. Howard brand namé in 1902 and subsequently sold watches under that name (known today as Keystone-Howard watches).įor more infórmation on Keystone-Hóward watches, see thé Keystone Howard pagé of this wéb site.Īmerican, founded 1853), Philadelphia, Pa.ĭate: early 20th century Medium: Illustrations: photomechanical process Accession: 62.600.10 On view in: Not on view Souvenir of the Worlds Columbian Exposition DA: 17 PA: 29 MOZ Rank: 46 How to Use our Vintage Watch Serial Number Date Lookup. Thé Keystone Standard Wátch Company should nót be confuséd with the Kéystone Watch Case Cómpany, which purchased thé rights to thé E. The 10-size watches were produced in the early 1920s, in 17, 19 and 21-jewel models, and are marked Patd 21.ĭA: 25 PA: 31 MOZ Rank: 56 Keystone Standard Watch Company: History, Serial Numbers. Noté that the 10-size Keystone-Howard Thin Model used its own serial number list starting at 1001, and cannot be dated using the chart above. DA: 23 PA: 50 MOZ Rank: 81 Keystone Watch Case Co.ĭA: 12 PA: 28 MOZ Rank: 40 Keystone-Howard Watch Company: History, Serial Numbers. Paul, Simon PhiIlip Peerless Watch Casé Co., Inc.

Keystone Watch Case Lookup Serial Numbers Are Unrelated.

Keystone watch case serial numbers