Pocket Watch Database

From the American Horology Archive:
Waltham Grade P.S. Bartlett Pocket Watch

American Waltham Watch Co.

Grade: P.S. Bartlett

Manufacturer: Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 255859
Grade: P.S. Bartlett
Model: 1857
Estimated Production Date: October 1866 - November 1866
Run Quantity: 400
Grade/Model Total Production: 293,259
Size: 18s
Jewels: 11j
Movement Configuration: Adaptable
Movement Finish: Gilt
Movement Setting: Key
Plate: Full Plate
Balance Type: Solid
Balance Material: Steel
Adjusted: No
Railroad Grade: No
Data Research: c.1900 Waltham Factory Ledgers
1954 Waltham "Gray Book" List
Case: Various
Registry Population: 5 (1.25%)
Database Version: v49.752

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 255610 #10 Marketplace March 27, 2020
2 255679 #79 Marketplace December 08, 2016
3
Image Credit: abmimoso
255859 #259 Collection July 27, 2022
4 255950 #350 Marketplace May 08, 2016
5 255989 #389 Inferred
Standard Deviation of Known Examples: 166.53 (Expected: 115.61, Δ50.92/12.73%)

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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 · February 17, 2013

Serial Number 255808 was reported as accurate.

Changes since this report was submitted:
Adjusted changed from Yes to No
Waltham Grade P.S. Bartlett Pocket Watch