Pocket Watch Database

From the American Horology Archive:
Seth Thomas Grade 508 Pocket Watch

Seth Thomas Watch Co.

Grade: 508

Manufacturer: Seth Thomas
Manufacturer Location: Thomaston, Connecticut
Movement Serial Number: 90934
Grade: 508
Model: 2
Estimated Production Year: 1895
Run Quantity: 100
Grade/Model Run: 6 of 7
Grade/Model Total Production: 530
Variant Est. Production: 420 (18S-M2-17J)
Size: 18s
Jewels: 17j
Jewel Setting: Screw-Set
Movement Configuration: Hunting
Movement Finish: Nickel
Movement Setting: Lever
Plate: 3/4 Plate
Balance Type: Expansion
Regulator: Patent
Hairspring: Flat
Standard Dial Type: Double-Sunk
Adjusted: Yes
Adjusted to Position: Yes
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
U.S. Patents: 374359
Case: Various
Run ID: 204.508G6.18S202.182M108.H108.L187.17J21
Database Version: v52.235
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
1.59
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
4.27
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.037%
Registry Population: 1 (1.00%)

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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.


Anonymous · November 17, 2017

Serial Number 90934 was reported as inaccurate.

Note: Sorry. Marked on mainspring barrel plate" adjusted
to tempeture and position"8. It has a micro whip
style regulator..the dial is the same type you
see on the ones marked "Henry molineux" double
sunk Roman numbers with Seth Thomas in fancy
script letting. Open morning glory hands.
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection so we can take a closer look.
Changes since this report was submitted:
Grade changed from Unknown to 508
Jewels changed from 16j to 17j

Anonymous · November 17, 2017

Serial Number 90934 was reported as inaccurate.

Note: Also add gold jewel settings, raised gold jewel
setting on top of center gear arbor with three
screws holding it to the plate. Snowflake and
other various damaskeen designs.
Changes since this report was submitted:
Grade changed from Unknown to 508
Jewels changed from 16j to 17j

Anonymous · November 16, 2017

Serial Number 90934 was reported as inaccurate.

Note: It's 18size model 2 with 16 jewels. Top jewels in
gold settings. Naked on Harrell bridge "adjusted
to temp and position. It's hunter case Movt. Gold
timing screws. Fancy snowflake engraving on
plates. Flat hairspring. Double sunk dial with
Seth Thomas letting in fancy script.
Changes since this report was submitted:
Grade changed from Unknown to 508
Movement Finish changed from Gilt or Nickel to Nickel
Seth Thomas Grade 508 Pocket Watch