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: 22138294
Grade: No. 645
Model: 1908
Estimated Production Year: 1918
Run Quantity: 700
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

22137801
Verification Serial Map
22138500

Mobilaero 227 · July 16, 2020

Serial Number 22138294 was reported as accurate.

Anonymous · March 13, 2016

Serial Number 22138078 was reported as accurate.

Anonymous · October 16, 2015

Serial Number 22138078 was reported as accurate.

Anonymous · December 30, 2014

Serial Number 22138093 was reported as accurate.

Anonymous · October 7, 2014

Serial Number 22138295 was reported as accurate.

Anonymous · February 12, 2014

Serial Number 22137825 was reported as accurate.

Anonymous · November 13, 2013

Serial Number 22138118 was reported as accurate.

Anonymous · November 7, 2013

Serial Number 22138118 was reported as accurate.

Anonymous · November 7, 2013

Serial Number 22138118 was reported as accurate.

Anonymous · June 26, 2013

Serial Number 22138118 was reported as accurate.

Anonymous · June 26, 2013

Serial Number 22138118 was reported as accurate.

Anonymous · May 30, 2013

Serial Number 22138118 was reported as accurate.

Anonymous · January 28, 2013

Serial Number 22138104 was reported as accurate.

Waltham Grade No. 645 Pocket Watch Movement