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: 161291
Grade: P.S. Bartlett
Model: 1857
Estimated Production Date: April 1865
Run Quantity: 200
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: 3 (1.50%)
Database Version: v49.391

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 161291 #41 Collection December 31, 2020
2 161298 #48 Marketplace June 26, 2019
3 161425 #175 Marketplace May 13, 2020
Standard Deviation of Known Examples: 75.43 (Expected: 57.88, Δ17.55/8.77%)

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Data Verification Reports

161251
Verification Serial Map
161450

Anonymous · May 26, 2019

Serial Number 161283 was reported as accurate.

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