Pocket Watch Database

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

American Waltham Watch Co.

Grade: No. 645

Manufacturer: Waltham Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 18018343 Question Mark
Grade: No. 645 Question Mark
Model: 1908 Question Mark
Estimated Production Year: 1910 Question Mark
Run Quantity: 1,200 Question Mark
Grade/Model Run: 13 of 66 Question Mark
Grade/Model Total Production: 59,300 Question Mark
Size: 16s Question Mark
Jewels: 21j Question Mark
Jewel Material: Ruby Question Mark
Jewel Setting: Screw-Set Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Lever Question Mark
Plate: Bridge Plate Question Mark
Double Roller: Yes Question Mark
Barrel: Jeweled Motor Question Mark
Regulator: Micrometer Question Mark
Hairspring: Breguet Question Mark
Pallet Jewel Material: Sapphire Question Mark
Standard Dial Type: Double-Sunk Question Mark
Adjusted: Yes Question Mark
Adjusted to Position: Yes Question Mark
Adjusted # of Positions: 5 Question Mark
Adjusted to Temperature: Yes Question Mark
Adjusted to Isochronism: Yes Question Mark
Railroad Grade: Yes Question Mark
Case: Various Question Mark
Run ID: 21627.G19.16S2708.161908M283.O13438.L5258.21J387 Question Mark
Data Research: 1954 Waltham "Gray Book" List
NAWCC Waltham Serial Digest
Question Mark
Database Version: v52.528 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
178.54 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
162.47 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.177% Question Mark
Registry Population:
Scoped for This Run Only
10 (0.83%) Question Mark

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Verification Reports for this Run

The following reports have been graciously submitted by dedicated members in reference to this production run. These reports are useful to verify data and track inaccuracies that require further research. Please note that reports may contain inaccurate information or assumptions that must be dilligently considered with other available sources.


Anonymous · December 7, 2023

Serial Number 18017735 was reported as accurate.

Anonymous · August 16, 2020

Serial Number 18017711 was reported as accurate.

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

giptwatchrepair 26 · June 26, 2019

Serial Number 18017601 was reported as accurate.

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

Anonymous · January 17, 2019

Serial Number 18017601 was reported as accurate.

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

Anonymous · August 9, 2017

Serial Number 18017533 was reported as accurate.

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

sanjosetom 313 · May 25, 2017

Serial Number 18017903 was reported as accurate.

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

ncplumber 150 · April 14, 2017

Serial Number 18018244 was reported as accurate.

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

Anonymous · June 6, 2016

Serial Number 18017973 was reported as accurate.

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

Anonymous · June 2, 2016

Serial Number 18018359 was reported as inaccurate.

Note: This one is a Model 1908 23J Vanguard. Maybe
someone switched the bridge plates but the
damasceen pattern is consistent all the way
around. Cheers. duffy l.
Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · January 24, 2015

Serial Number 18018346 was reported as accurate.

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

Anonymous · January 23, 2015

Serial Number 18017701 was reported as accurate.

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

Anonymous · November 19, 2013

Serial Number 18017412 was reported as accurate.

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

Anonymous · September 4, 2013

Serial Number 18018175 was reported as accurate.

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

Anonymous · April 3, 2013

Serial Number 18018433 was reported as accurate.

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