Enter the serial number from the pocket watch movement below. Do not use the case number. Serial Number Tip

Pocket Watch Serial Number Lookup - Hamilton, South Bend, Illinois, Rockford, Waltham & Elgin Pocket Watches
  Serial Number:
Need to replace a watch crystal? Use our new crystal size guide to find the proper fit.
Company Profile: Seth Thomas Watch Co.

Location: Thomaston, Connecticut

Years of Operation: 1885-1915

Production Jewels: 7-28 Jewels

Production Sizes: 18s, 16s, 12s, 6s, 0s

Total Production: ~3,000,000

Factory Building Status: Original Seth Thomas clock tower still stands.

Average Quality:

Average Rarity:

Company Timeline


The Seth Thomas Clock Co. is founded.


After running a successful clock company for several decades, Seth Thomas enters the watch market.


The Seth Thomas Watch Co. is producing roughly 100 movements per day and employs 200 people.


After an moderately successful operation for 30 years, Seth Thomas decides to cease production of watches.