Pocket Watch Database

From the American Horology Archive:
Waltham Grade No. 620 Pocket Watch
Waltham Grade No. 620 Pocket Watch

American Waltham Watch Co.

Grade: No. 620

(Alternatively Grade No. 625) Mixed Run: 15-Jewel and 17-Jewel Movements

Manufacturer: Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 12439396
Grade: No. 620
Model: 1899
Estimated Production Year: 1903
Run Quantity: 3,000
Total Production: 340,100
Size: 16s
Jewels: 15j    Mixed Run
Movement Configuration: Hunting
Movement Setting: Pendant
Plate: Bridge Plate
Bridge Type: Center
Hairspring: Breguet
Adjusted: No
Railroad Grade: No
Data Research: 1954 Waltham "Gray Book" List
Case: Various
Registry Population: 11 (0.37%)
Database Version: v49.391

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 12439126 #126 Marketplace October 01, 2014
2 12439396 #396 Collection October 04, 2013
3 12439696 #696 Collection July 24, 2020
4 12440374 #1374 Marketplace March 04, 2021
5 12440393 #1393 Marketplace October 30, 2016
6 12440585 #1585 Marketplace October 18, 2018
7 12440750 #1750 Marketplace January 28, 2014
8 12440823 #1823 Marketplace November 04, 2012
9 12441174 #2174 Collection April 22, 2015
10 12441345 #2345 Marketplace July 20, 2019
11 12441456 #2456 Inferred
Standard Deviation of Known Examples: 776.11 (Expected: 866.17, Δ90.06/3.00%)

Help Us Help Others By Improving the Database:

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Data Verification Reports

12439001
Verification Serial Map
12442000

bobone 21 · September 23, 2022

Serial Number 12441294 was reported as inaccurate.

Note: watch is marked 15 jewels
Changes since this report was submitted:
Jewels changed from 17j to 15j

orrelse Supporter 12 · January 23, 2022

Serial Number 12441174 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 17j to 15j

strap89 11 · July 24, 2020

Serial Number 12439696 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 17j to 15j
Plate changed from 3/4 to Bridge

Anonymous · April 25, 2020

Serial Number 12440484 was reported as inaccurate.

Note: my watch is marked 17 jewels
Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · January 27, 2020

Serial Number 12439480 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

dscottgoodrick 142 · March 12, 2017

Serial Number 12439885 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · November 16, 2016

Serial Number 12439982 was reported as inaccurate.

Note: Watch is stamped 17 jewels
Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · August 7, 2016

Serial Number 12439883 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · April 28, 2015

Serial Number 12439809 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · December 2, 2014

Serial Number 12441884 was reported as inaccurate.

Note: 15 jewels
Changes since this report was submitted:
Jewels changed from 17j to 15j
Plate changed from 3/4 to Bridge

Anonymous · February 9, 2014

Serial Number 12440385 was reported as inaccurate.

Note: 15jewels
Changes since this report was submitted:
Jewels changed from 17j to 15j
Plate changed from 3/4 to Bridge

Anonymous · December 18, 2013

Serial Number 12441946 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 17j to 15j
Plate changed from 3/4 to Bridge

jacobwalls07 143 · September 23, 2013

Serial Number 12439396 was reported as inaccurate.

Note: Mine is 15 jewel
Changes since this report was submitted:
Jewels changed from 17j to 15j
Plate changed from 3/4 to Bridge
Waltham Grade No. 620 Pocket Watch
Waltham Grade No. 620 Pocket Watch