Pocket Watch Database

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

American Waltham Watch Co.

Grade: No. 645

Mixed Run: Pendant-Set and Lever-Set Examples

Manufacturer: Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 17179288
Grade: No. 645
Model: 1908
Estimated Production Year: 1908
Run Quantity: 2,000
Total Production: 59,300
Size: 16s
Jewels: 21j
Jewel Material: Ruby
Jewel Setting: Screw-Set
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Pendant    Mixed Run
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: No
Data Research: 1954 Waltham "Gray Book" List
Database Version: v48.137

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Data Verification Reports

17178001
Verification Serial Map
17180000

Anonymous · December 14, 2019

Serial Number 17178227 was reported as inaccurate.

Note: 16s, 21j, Lever Set, adj 5 pos
Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · November 12, 2018

Serial Number 17178338 was reported as accurate.

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

Anonymous · November 9, 2018

Serial Number 17178338 was reported as accurate.

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

Anonymous · November 8, 2018

Serial Number 17178338 was reported as accurate.

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

Anonymous · October 4, 2018

Serial Number 17178338 was reported as accurate.

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

Anonymous · November 23, 2017

Serial Number 17178252 was reported as accurate.

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

Anonymous · April 22, 2017

Serial Number 17178530 was reported as accurate.

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

Anonymous · March 1, 2017

Serial Number 17178495 was reported as inaccurate.

Note: this movement #17178495 was 495 in a run to
1718000 . it is lever set, main wheel is
jeweled,has a patent regulator and requires
position grade material for repair.
could the "P"in the material list have
been mistaken to indicate pendant setting
Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · January 3, 2017

Serial Number 17179915 was reported as accurate.

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

Anonymous · November 5, 2016

Serial Number 17178495 was reported as inaccurate.

Note: ref. complete price guide to watches #35 page 24
lists american railroad approved watches circa
1930 . waltham vanguard,crescent street, 645,
riverside are all listed
Curator Response: Thanks for the report. We currently have this run as pendant-set, which would not have been accepted for railroad service on most American railroads after 1908. The estimated manufacturing date for this run is right at that cusp.
Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · August 21, 2014

Serial Number 17179941 was reported as accurate.

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

Anonymous · August 15, 2013

Serial Number 17179950 was reported as accurate.

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