Pocket Watch Database

From the American Horology Archive:
Waltham Grade No. 20 Pocket Watch

American Waltham Watch Co.

Grade: No. 20

Manufacturer: Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 6488036
Grade: No. 20
Model: 1888
Estimated Production Date: January 1895 - April 1895
Run Quantity: 3,000
Total Production: 305,873
Size: 16s
Jewels: 7j
Movement Configuration: Openface
Movement Finish: Gilt
Movement Setting: Pendant
Plate: 3/4 Plate
Hairspring: Breguet
Adjusted: No
Railroad Grade: No
Data Research: 1954 Waltham "Gray Book" List
Case: Various
Registry Population: 12 (0.40%)
Database Version: v49.391

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 6486212 #212 Marketplace June 19, 2018
2 6486659 #659 Inferred
3 6487414 #1414 Collection May 07, 2014
4 6487473 #1473 Marketplace March 27, 2014
5 6487811 #1811 Marketplace December 01, 2013
6 6488036 #2036 Collection November 24, 2022
7 6488082 #2082 Marketplace June 05, 2014
8 6488408 #2408 Marketplace January 17, 2013
9 6488444 #2444 Marketplace January 09, 2015
10 6488459 #2459 Marketplace September 19, 2018
11 6488480 #2480 Marketplace September 13, 2018
12 6488894 #2894 Marketplace August 14, 2014
Standard Deviation of Known Examples: 800.18 (Expected: 866.17, Δ65.99/2.20%)

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Data Verification Reports

6486001
Verification Serial Map
6489000

Anonymous · April 26, 2022

Serial Number 6488716 was reported as accurate.

Anonymous · February 25, 2021

Serial Number 6487931 was reported as accurate.

Anonymous · December 30, 2020

Serial Number 6487839 was reported as accurate.

Anonymous · November 19, 2020

Serial Number 6488556 was reported as accurate.

Anonymous · April 2, 2020

Serial Number 6487226 was reported as accurate.

Beezqueen 44 · March 15, 2020

Serial Number 6488008 was reported as accurate.

Anonymous · October 15, 2019

Serial Number 6488647 was reported as accurate.

Anonymous · September 3, 2019

Serial Number 6487014 was reported as accurate.

WLBelkriver33 804 · October 11, 2018

Serial Number 6488480 was reported as accurate.

Anonymous · June 16, 2018

Serial Number 6486212 was reported as accurate.

Anonymous · October 10, 2016

Serial Number 6488124 was reported as accurate.

jah4587 2 · May 20, 2014

Serial Number 6487414 was reported as accurate.

Changes since this report was submitted:
Movement Setting changed from Key to Pendant

jah4587 2 · May 7, 2014

Serial Number 6487414 was reported as accurate.

Changes since this report was submitted:
Movement Setting changed from Key to Pendant
Waltham Grade No. 20 Pocket Watch