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: 234831
Grade: P.S. Bartlett
Model: 1857
Estimated Production Date: July 1866
Run Quantity: 90
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: 2 (2.22%)
Database Version: v49.716

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 234781 #11 Marketplace June 11, 2013
2 234831 #61 Collection September 23, 2015
Standard Deviation of Known Examples: 35.36 (Expected: 26.12, Δ9.23/10.26%)

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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 · January 7, 2014

Serial Number 234819 was reported as accurate.

Changes since this report was submitted:
Adjusted changed from Yes to No

Anonymous · June 10, 2013

Serial Number 234781 was reported as inaccurate.

Note: mine is size 60S I think,7 jewel
Changes since this report was submitted:
Adjusted changed from Yes to No
Waltham Grade P.S. Bartlett Pocket Watch