Pocket Watch Database

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

American Waltham Watch Co.

Grade: P.S. Bartlett

Manufacturer: Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 430317
Grade: P.S. Bartlett
Model: 1857
Estimated Production Date: March 1870 - September 1, 1870
Run Quantity: 106
Total Production: 293,259
Size: 18s
Jewels: 11j
Movement Configuration: Either
Movement Finish: Gilt
Movement Setting: Key
Plate: Full Plate
Adjusted: Yes
Railroad Grade: No
Data Research: c.1900 Waltham Factory Ledgers
1954 Waltham "Gray Book" List

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Data Verification Reports

430258
Verification Serial Map
430363

Anonymous · April 17, 2018

Serial Number 430270 was reported as accurate.

Anonymous · February 27, 2014

Serial Number 430299 was reported as accurate.

Waltham Grade P.S. Bartlett Pocket Watch Movement