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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/seth-thomas/28853
Access Date: April 28, 2024
From the American Horology Archive:
Seth Thomas Grade 56 Pocket Watch
Seth Thomas Watch Co.

Grade: 56

Manufacturer: Seth Thomas
Manufacturer Location: Thomaston, Connecticut
Movement Serial Number: 28853
Grade: 56
Model: 2
Estimated Production Year: 1888
Run Quantity: 200
Grade/Model Run: 1 of 13
Grade/Model Total Production: 3,900
Variant Est. Production: 3,700 (18S-M2-11J)
Size: 18s
Jewels: 11j
Jewel Setting: Burnished Jewels
Movement Configuration: Hunting
Movement Finish: Gilt
Movement Setting: Lever
Plate: 3/4 Plate
Balance Type: Expansion
Regulator: Reed
Hairspring: Flat
Standard Dial Type: Single-Sunk
Adjusted: No
Railroad Grade: No
U.S. Patents: 374359
Movement Markings: Seth Thomas
Thomaston, Conn.
Safety Pinion
Pat'd Dec.6.'87.
Case: Various
Run ID: 41.56G1.18S41.182M8.H8.L41.11J12
Database Version: v52.245
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 11.74
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration		 34.22
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration		 0.276%
Registry Population: 3 (1.50%)
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Production Metrics Tree: Grade 56

Target Profile: 18S-M2-11J-HGL-U

Seth Thomas Grade 56 (All Variations): 3,900 ETP
18S: 3,900 100.00%
18s, Grade 56
18S-M2: 3,900 100.00%
18s, Grade 56, Model 2
18S-M2-11J: 3,700 94.87%
18s, Grade 56, Model 2, 11 Jewels		 Other: 200
Other Jewels or Unclassified
18S-M2-11J-HGL: 3,700 94.87%
18s, Grade 56, Model 2, 11 Jewels, Hunting/Lever/Gilt
18S-M2-11J-HGL-U: 3,700 94.87%

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
There are 3 watches in the population registry for this run with 2 images.
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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 303 · September 11, 2023

Serial Number 28870 was reported as accurate.

SethThomasFan Top Contributor Seth Thomas Expert Supporter 303 · September 11, 2023

Serial Number 28853 was reported as accurate.

SethThomasFan Top Contributor Seth Thomas Expert Supporter 303 · September 10, 2023

Serial Number 28853 was reported as inaccurate.

Note: Grade: 56
Jewels: 11j
Regulator: Micrometer
Curator Response: Thanks for the report. The database has been updated accordingly.
Changes since this report was submitted:
Grade changed from 34 to 56
Jewels changed from 7J to 11j

SethThomasFan Top Contributor Seth Thomas Expert Supporter 303 · September 10, 2023

Serial Number 28870 was reported as inaccurate.

Note: Grade: 56
Jewels: 11j
Regulator: Micrometer
Curator Response: Thanks for the report. The database has been updated accordingly.
Changes since this report was submitted:
Grade changed from 34 to 56
Jewels changed from 7J to 11j
Seth Thomas Grade 56 Pocket Watch