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: 41155
Grade: P.S. Bartlett
Model: 1857
Estimated Production Date: December 1860
Run Quantity: 500
Grade/Model Total Production: 293,259
Size: 18s
Jewels: 7j
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: 8 (1.60%)
Database Version: v49.712

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 40704 #4 Collection March 24, 2018
2 40822 #122 Inferred
3 40835 #135 Inferred
4 41071 #371 Inferred
5 41093 #393 Inferred
6 41115 #415 Inferred
7 41142 #442 Inferred
8
Image Credit: Kingfisher
41155 #455 Collection December 25, 2016
Standard Deviation of Known Examples: 176.12 (Expected: 144.48, Δ31.64/6.33%)

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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 · May 11, 2018

Serial Number 41152 was reported as accurate.

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

Anonymous · February 7, 2017

Serial Number 41123 was reported as accurate.

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

Anonymous · March 15, 2015

Serial Number 41046 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Adjusted changed from Yes to No

Anonymous · May 20, 2014

Serial Number 40821 was reported as accurate.

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

Anonymous · April 15, 2013

Serial Number 40856 was reported as inaccurate.

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