Pocket Watch Database

From the American Horology Archive:
Waltham Grade No. 645 Pocket Watch Movement

American Waltham Watch Co.

Grade: No. 645

Manufacturer: Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 22191020
Grade: No. 645
Model: 1908
Estimated Production Year: 1918
Run Quantity: 1,000
Total Production: 59,300
Size: 16s
Jewels: 21j
Jewel Material: Ruby
Jewel Setting: Screw-Set
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Lever
Plate: 3/4 Plate
Double Roller: Yes
Barrel: Jewelled Motor
Regulator: Micrometer
Hairspring: Breguet
Pallet Jewel Material: Sapphire
Standard Dial Type: Double-Sunk
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 5
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: Yes
Data Research: 1954 Waltham "Gray Book" List

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Data Verification Reports

22190501
Verification Serial Map
22191500

Anonymous · April 5, 2020

Serial Number 22191462 was reported as accurate.

Wbridg10 111 · December 26, 2018

Serial Number 22191035 was reported as accurate.

WLBelkriver33 804 · November 13, 2018

Serial Number 22191035 was reported as accurate.

WLBelkriver33 804 · November 11, 2018

Serial Number 22191035 was reported as accurate.

Anonymous · April 19, 2018

Serial Number 22190598 was reported as accurate.

Anonymous · February 13, 2017

Serial Number 22191425 was reported as accurate.

Anonymous · December 17, 2016

Serial Number 22191203 was reported as accurate.

Anonymous · December 28, 2015

Serial Number 22191020 was reported as accurate.

Anonymous · March 20, 2014

Serial Number 22191020 was reported as accurate.

Anonymous · February 16, 2014

Serial Number 22191498 was reported as accurate.

dnewman 4 · June 22, 2013

Serial Number 22190860 was reported as accurate.

Anonymous · June 16, 2013

Serial Number 22191281 was reported as accurate.

Anonymous · April 13, 2013

Serial Number 22191172 was reported as accurate.

Waltham Grade No. 645 Pocket Watch Movement