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: 17121819
Grade: No. 645
Model: 1908
Estimated Production Year: 1908
Run Quantity: 500
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: Bridge Plate
Double Roller: Yes
Barrel: Jeweled Motor
Regulator: Church 1892
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
Database Version: v46.738

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Data Verification Reports

17121501
Verification Serial Map
17122000

Anonymous · May 10, 2021

Serial Number 17121521 was reported as accurate.

Anonymous · October 14, 2016

Serial Number 17121960 was reported as accurate.

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

Anonymous · January 8, 2015

Serial Number 17121535 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge
Waltham Grade No. 645 Pocket Watch Movement