Pocket Watch Database
https://pocketwatchdatabase.com/search/result/seth-thomas/641855
Access Date: June 01, 2025
From the American Horology Archive:

Seth Thomas Watch Co.
Grade: 37
Manufacturer: | Seth Thomas |
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Manufacturer Location: | Thomaston, Connecticut |
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Movement Serial Number: | 641855 |
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Grade: | 37 |
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Model: | 7 |
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Estimated Production Year: | 1901 |
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Run Quantity: | 300 |
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Grade/Model Run: | 13 of 13 |
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Grade/Model Total Production: | 20,300 |
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Variant Est. Production: | 700 (18S-M7-7J-HTL) |
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Size: | 18s |
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Jewels: | 7j |
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Movement Configuration: | Hunting |
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Movement Finish: | Two-Tone |
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Finish Pattern: | Inlaid Circle |
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Movement Setting: | Lever |
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Plate: | 3/4 Plate |
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Regulator: | Plain |
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Hairspring: | Breguet |
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Adjusted: | No |
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Railroad Grade: | No |
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Movement Markings: |
Seth Thomas Thomaston, Conn. Safety Pinion |
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Case: | Various | ![]() |
Run ID: | 829.37G13.18S707.187M43.H325.L734.7J215 | ![]() |
Data Research: |
1904 Seth Thomas Serial List |
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Database Version: | v52.678 | ![]() |
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Registry Population: Scoped for This Run Only | 1 (0.33%) | ![]() |
$ Estimated Value (12 Month Change): | -11.02% Analyzing 115 Sales | ![]() |
Population Registry for This Run
Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
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There is 1 watch in the population registry for this run with 1 image.
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Verification Reports for this Run
The following reports have been graciously submitted by dedicated members in reference to this production run. These reports are useful to verify data and track inaccuracies that require further research. Please note that reports may contain inaccurate information or assumptions that must be dilligently considered with other available sources.
SethThomasFan Top Contributor Seth Thomas Expert Supporter 455 · December 8, 2023
Serial Number 641855 was reported as accurate.
SethThomasFan Top Contributor Seth Thomas Expert Supporter 455 · December 7, 2023
Serial Number 641855 was reported as inaccurate.
Jewels: 7
Movement Finish: Two-Tone
Movement Markings: Seth Thomas
Thomaston, Conn.
Safety Pinion

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This WatchFrom This Run
uploaded by SethThomasFan
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Image Source/Credit: eBay Auction
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uploaded by SethThomasFan
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Image Source/Credit: eBay Auction
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Image Source/Credit: eBay Auction
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Image Source/Credit: eBay Auction
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Image Source/Credit: eBay Auction
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uploaded by SethThomasFan