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: 20003047
Grade: No. 645
Model: 1908
Estimated Production Year: 1915
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

20003001
Verification Serial Map
20004000

Anonymous · April 23, 2020

Serial Number 20003788 was reported as accurate.

avpalermo 242 · April 16, 2020

Serial Number 20003005 was reported as accurate.

Anonymous · February 29, 2020

Serial Number 20003911 was reported as accurate.

Anonymous · January 22, 2020

Serial Number 20003542 was reported as accurate.

ady270 14 · January 2, 2020

Serial Number 20003129 was reported as accurate.

Anonymous · January 2, 2020

Serial Number 20003129 was reported as accurate.

Anonymous · November 9, 2019

Serial Number 20003087 was reported as accurate.

WLBelkriver33 804 · November 22, 2018

Serial Number 20003379 was reported as accurate.

canadadan 10 · February 26, 2018

Serial Number 20003534 was reported as accurate.

Minster 1 · January 9, 2017

Serial Number 20003047 was reported as accurate.

Anonymous · January 8, 2017

Serial Number 20003047 was reported as accurate.

Anonymous · January 8, 2017

Serial Number 20003047 was reported as accurate.

Anonymous · January 8, 2017

Serial Number 20003047 was reported as accurate.

Anonymous · December 20, 2016

Serial Number 20003881 was reported as accurate.

Rbriault 1 · March 15, 2016

Serial Number 20003648 was reported as accurate.

Anonymous · December 1, 2014

Serial Number 20003476 was reported as accurate.

Waltham Grade No. 645 Pocket Watch Movement