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: 19593
Grade: P.S. Bartlett
Model: 1857
Estimated Production Date: April 1859 - May 1859
Run Quantity: 560
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: 6 (1.07%)
Database Version: v49.391

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 19593 #193 Collection June 26, 2016
2 19631 #231 Inferred
3 19642 #242 Inferred
4 19691 #291 Collection January 10, 2017
5 19876 #476 Inferred
6 19920 #520 Collection December 29, 2018
Standard Deviation of Known Examples: 137.93 (Expected: 161.80, Δ23.87/4.26%)

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Data Verification Reports

19401
Verification Serial Map
19960

Anonymous · November 7, 2021

Serial Number 19612 was reported as accurate.

JHarrison 21 · December 22, 2020

Serial Number 19593 was reported as accurate.

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

Anonymous · June 13, 2020

Serial Number 19426 was reported as accurate.

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

Anonymous · September 7, 2019

Serial Number 19450 was reported as accurate.

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

Anonymous · July 13, 2019

Serial Number 19528 was reported as accurate.

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

Anonymous · March 2, 2017

Serial Number 19426 was reported as accurate.

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

Anonymous · August 13, 2016

Serial Number 19914 was reported as accurate.

JHarrison 21 · June 26, 2016

Serial Number 19593 was reported as accurate.

Anonymous · May 12, 2016

Serial Number 19558 was reported as accurate.

Anonymous · May 12, 2016

Serial Number 19558 was reported as accurate.

Anonymous · January 28, 2016

Serial Number 19426 was reported as accurate.

Anonymous · September 18, 2014

Serial Number 19871 was reported as accurate.

von1943 361 · June 4, 2014

Serial Number 19803 was reported as accurate.

von1943 361 · June 4, 2014

Serial Number 19803 was reported as accurate.

von1943 361 · June 4, 2014

Serial Number 19803 was reported as accurate.

Anonymous · July 25, 2013

Serial Number 19884 was reported as inaccurate.

No further details were submitted with the report.
Waltham Grade P.S. Bartlett Pocket Watch