Pocket Watch Database

From the American Horology Archive:
Seth Thomas Grade 260 Pocket Watch

Seth Thomas Watch Co.

Grade: 260

Manufacturer: Seth Thomas
Manufacturer Location: Thomaston, Connecticut
Movement Serial Number: 210720
Grade: 260
Variation: SR
Model: 5
Estimated Production Year: 1903
Run Quantity: 130
Grade/Model Run: 8 of 19
Grade/Model Total Production: 1,530
Variant Est. Production: 1,270 (18S-M5-21J-ONL-A6PTI-SR)
Size: 18s
Jewels: 21j
Jewel Setting: Screw-Set
Movement Configuration: Openface
Movement Finish: Nickel
Movement Inlay Color: Gilt
Movement Setting: Lever
Plate: Full Plate
Regulator: Micrometric
Hairspring: Breguet
Standard Dial Type: Double-Sunk
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 6
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: Yes
Movement Markings: Seth Thomas
Thomaston, Conn.
Safety Pinion.
Adjusted to Six Positions
No. 260
21 Jewel
Case: Various
Run ID: 386.260G8.18S317.185M87.O175.L368.21J20
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
4.58
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
13.16
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.109%
Registry Population: 7 (5.38%)

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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.


Enjay9 1 · December 14, 2023

Serial Number 210718 was reported as accurate.

pocketwatch101 111 · March 17, 2018

Serial Number 210720 was reported as accurate.

Anonymous · January 18, 2017

Serial Number 210775 was reported as accurate.

toothsls 44 · March 25, 2015

Serial Number 210679 was reported as inaccurate.

Note: Serial number 210679 is a Grade 260, 18s Model 5,
21 jewels, nickel plates, adjusted to six
positions.
Changes since this report was submitted:
Grade changed from 182 to 260
Jewels changed from 17j to 21j
Seth Thomas Grade 260 Pocket Watch