Pocket Watch Database

From the American Horology Archive:
Seth Thomas Grade 56 Pocket Watch

Seth Thomas Watch Co.

Grade: 56

Private Label(s) in Run:

Louis G. Addor - Sedalia, Mo.
Brumer Bros - Clinton, Iowa

What is a Private Label?
Manufacturer: Seth Thomas Question Mark
Manufacturer Location: Thomaston, Connecticut Question Mark
Movement Serial Number: 505702 Question Mark
Grade: 56 Question Mark
Model: 2 Question Mark
Estimated Production Year: 1899 Question Mark
Run Quantity: 200 Question Mark
Grade/Model Run: 13 of 13 Question Mark
Grade/Model Total Production: 3,900 Question Mark
Variant Est. Production: 200 (18S-M2-7J) Question Mark
Size: 18s Question Mark
Jewels: 7j Question Mark
Jewel Setting: Burnished Jewels Question Mark
Movement Configuration: Hunting Question Mark
Movement Finish: Gilt Question Mark
Movement Setting: Lever Question Mark
Plate: 3/4 Plate Question Mark
Balance Type: Expansion Question Mark
Regulator: -1892:Micrometric;1893-:Plain Question Mark
Hairspring: Flat Question Mark
Standard Dial Type: Single-Sunk Question Mark
Adjusted: No Question Mark
Railroad Grade: No Question Mark
U.S. Patents: 374359 Question Mark
Movement Markings: [Private Label]
Safety Pinion
Pat'd Dec.6.'87.
Case: Various Question Mark
Run ID: 690.56G13.18S571.182M138.H255.L604.7J133 Question Mark
Data Research: 1904 Seth Thomas Serial List
Question Mark
Database Version: v52.433 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
11.74 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
34.22 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.275% Question Mark
Registry Population:
Scoped for This Run Only
2 (1.00%) Question Mark
Research Note: #505702: Verified as a Private Label Marked "Louis G. Addor - Sedalia, Mo." It is possible the escape wheel and 4th wheel have upper jewels burnished into the plate (unclear image), which would suggest a 9 or 11 jewel movement instead of 7.

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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.


Anonymous · September 26, 2021

Serial Number 505693 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Grade changed from 71 to 56
Jewels changed from 15j to 7J

Anonymous · September 15, 2020

Serial Number 505703 was reported as accurate.

Changes since this report was submitted:
Grade changed from Unknown to 56

Anonymous · February 7, 2018

Serial Number 505716 was reported as accurate.

Changes since this report was submitted:
Grade changed from Unknown to 56

Anonymous · January 27, 2018

Serial Number 505716 was reported as accurate.

Changes since this report was submitted:
Grade changed from Unknown to 56

Anonymous · May 8, 2015

Serial Number 505624 was reported as inaccurate.

Note: watch movement is marked Brumer Bros Clinton Iowa
Changes since this report was submitted:
Grade changed from Unknown to 56
Seth Thomas Grade 56 Pocket Watch