Pocket Watch Database

From the American Horology Archive:
Waltham Grade Crescent St. Pocket Watch

American Waltham Watch Co.

Grade: Crescent St.

Manufacturer: Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 520525
Grade: Crescent St.
Model: 1870
Estimated Production Date: October 1870 - May 1, 1871
Run Quantity: 700
Grade/Model Total Production: 17,880
Size: 18s
Jewels: 15j
Movement Configuration: Adaptable
Movement Finish: Gilt
Movement Setting: Key
Plate: Full Plate
Adjusted: Yes
Adjusted to Position: Yes
Data Research: c.1900 Waltham Factory Ledgers
1954 Waltham "Gray Book" List
Case: Various
Registry Population: 4 (0.57%)
Database Version: v49.716

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 520340 #40 Marketplace February 16, 2020
2 520403 #103 Collection December 11, 2022
3
Image Credit: 1dueberincanton
520525 #225 Collection May 18, 2021
4 520900 #600 Collection November 14, 2015
Standard Deviation of Known Examples: 250.72 (Expected: 202.22, Δ48.50/6.93%)

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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.


Rcardkidz 2788 · December 5, 2022

Serial Number 520356 was reported as accurate.

Anonymous · August 30, 2022

Serial Number 520704 was reported as accurate.

Anonymous · April 30, 2021

Serial Number 520650 was reported as accurate.

Anonymous · December 4, 2019

Serial Number 520434 was reported as accurate.

Anonymous · June 9, 2019

Serial Number 520356 was reported as accurate.

Anonymous · October 8, 2018

Serial Number 520620 was reported as accurate.

Anonymous · September 12, 2018

Serial Number 520311 was reported as accurate.

Anonymous · September 12, 2018

Serial Number 520311 was reported as accurate.

Anonymous · April 26, 2018

Serial Number 520548 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · January 4, 2018

Serial Number 520386 was reported as accurate.

Anonymous · January 16, 2017

Serial Number 520346 was reported as accurate.

Anonymous · March 25, 2016

Serial Number 520732 was reported as accurate.

Changes since this report was submitted:
Movement Finish changed from Nickel to Gilt
Waltham Grade Crescent St. Pocket Watch