Pocket Watch Database

From the American Horology Archive:
Seth Thomas Grade 80 Pocket Watch

Seth Thomas Watch Co.

Grade: 80

Manufacturer: Seth Thomas Question Mark
Manufacturer Location: Thomaston, Connecticut Question Mark
Movement Serial Number: 505930 Question Mark
Grade: 80 Question Mark
Model: 2 Question Mark
Estimated Production Year: Login to View for Free Question Mark
Run Quantity: Login to View for Free Question Mark
Grade/Model Run: Login to View for Free Question Mark
Grade/Model Total Production: Login to View for Free Question Mark
Variant Est. Production: Login to View for Free Question Mark
Size: 18s Question Mark
Jewels: 17j Question Mark
Jewel Setting: Login to View for Free Question Mark
Movement Configuration: Hunting Question Mark
Movement Finish: Gilt Damaskeened Question Mark
Movement Setting: Lever Question Mark
Wind Mechanism: Pendant Question Mark
Plate: 3/4 Plate Question Mark
Balance Type: Expansion Question Mark
Regulator: Login to View for Free Question Mark
Hairspring: Login to View for Free Question Mark
Adjusted: Yes Question Mark
U.S. Patents: Login to View for Free Question Mark
Movement Markings: Login to View for Free
Case: Various Question Mark
Run ID: 705.80G5.18S583.182M143.H263.L617.17J202 Question Mark
Data Research: 1904 Seth Thomas Serial List
Question Mark
Database Version: v52.645 Question Mark
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Registry Population:
Scoped for This Run Only
1 (2.00%) Question Mark
10 Additional Member-Only Data Points Available

The following information is unlocked with a free account:

Estimated Production Year, Run Quantity, Grade/Model Run, Grade/Model Total Production, Variant Est. Production, Jewel Setting, Regulator Type, Hairspring, U.S. Patents, Movement Markings

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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 451 · August 26, 2023

Serial Number 505930 was reported as inaccurate.

Note: Grade: 180
Movement Finish: Nickel
Curator Response: Thanks for the report. This movement is gilt damanskeened. It is unclear whether the company would have considered this movement Grade 80 or Grade 180 (or an unknown grade). For the time being, these will be classified as Grade 80 since the 180 was still being produced at this time as a nickel movement.
Changes since this report was submitted:
Movement Finish changed from Gilt to Gilt Damaskeened

Anonymous · August 9, 2020

Serial Number 505930 was reported as accurate.

Changes since this report was submitted:
Grade changed from Unknown to 80
Movement Finish changed from Gilt to Gilt Damaskeened
Seth Thomas Grade 80 Pocket Watch