Pocket Watch Database

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

Seth Thomas Watch Co.

Grade: 80

Manufacturer: Seth Thomas
Manufacturer Location: Thomaston, Connecticut
Movement Serial Number: 505930
Grade: 80
Model: 2
Estimated Production Year: 1898
Run Quantity: 50
Grade/Model Run: 5 of 6
Grade/Model Total Production: 890
Variant Est. Production: 250 (18S-M2-17J-HDL)
Size: 18s
Jewels: 17j
Jewel Setting: Screw-Set
Movement Configuration: Hunting
Movement Finish: Gilt Damaskeened
Movement Setting: Lever
Plate: 3/4 Plate
Balance Type: Expansion
Regulator: Reed
Hairspring: Flat
Adjusted: Yes
U.S. Patents: 374359
Movement Markings: Seth Thomas
Thomaston, Conn.
Safety Pinion
Pat'd Dec.6.'87.
Adjusted
Data Research: 1904 Seth Thomas Serial List
Case: Various
Run ID: 687.80G5.18S571.182M142.H256.L601.17J195
Database Version: v52.289
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
2.68
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
7.47
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.063%
Registry Population: 1 (2.00%)

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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 314 · 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