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: 19105864
Grade: No. 645
Model: 1908
Estimated Production Year: 1913
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: Bridge Plate
Double Roller: Yes
Barrel: Jeweled 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

19105501
Verification Serial Map
19106500

Radron 102 · February 13, 2019

Serial Number 19105560 was reported as accurate.

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

Anonymous · January 16, 2019

Serial Number 19105606 was reported as accurate.

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

Mark12 2 · March 6, 2017

Serial Number 19106447 was reported as accurate.

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

Mark12 2 · March 6, 2017

Serial Number 19106447 was reported as accurate.

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

Anonymous · October 27, 2015

Serial Number 19105534 was reported as accurate.

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

Anonymous · March 16, 2015

Serial Number 19105783 was reported as accurate.

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

Anonymous · February 7, 2015

Serial Number 19105763 was reported as accurate.

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

Anonymous · October 2, 2014

Serial Number 19105809 was reported as accurate.

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

Anonymous · September 11, 2013

Serial Number 19106463 was reported as inaccurate.

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