Pocket Watch Database


From the American Horology Archive:
Waltham Grade No. 1420 Pocket Watch

American Waltham Watch Co.

Grade: No. 1420

Manufacturer: Waltham Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 22766894 Question Mark
Grade: No. 1420 Question Mark
Model: Colonial Series Question Mark
Estimated Production Year: 1919 Question Mark
Run Quantity: 2,000 Question Mark
Grade/Model Run: 31 of 31 Question Mark
Grade/Model Total Production: 51,000 Question Mark
Size: 14s Question Mark
Jewels: 15j Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Pendant Question Mark
Plate: 3/4 Split Plate Question Mark
Regulator: Patent Question Mark
Hairspring: Breguet Question Mark
Adjusted: No Question Mark
Railroad Grade: No Question Mark
Case: Various Question Mark
Run ID: 24257.G31.14S2534.M106.O15082.P9273.15J5714 Question Mark
Data Research: 1954 Waltham "Gray Book" List
NAWCC Waltham Serial Digest
Question Mark
Database Version: v52.526 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
149.03 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
135.62 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.148% Question Mark
Registry Population:
Scoped for This Run Only
6 (0.30%) Question Mark
Research Note: Waltham Serial Ledgers designate this run as "Col. Series No. 1420" (Colonial Series). Pillar plate measures as 14s while movement is based on the 12s Model 1894.

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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.


MrCat63 11 · August 23, 2022

Serial Number 22766894 was reported as accurate.

Rentalmama 19 · June 6, 2020

Serial Number 22767634 was reported as accurate.

Changes since this report was submitted:
Factory Model changed from Colonial A to Colonial Series

Anonymous · January 26, 2019

Serial Number 22767633 was reported as accurate.

Changes since this report was submitted:
Factory Model changed from Colonial A to Colonial Series

bobone 22 · March 25, 2018

Serial Number 22767292 was reported as inaccurate.

Note: 8-day, Size 37, 7-jewels in car dash mount
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection so we can take a closer look.
Changes since this report was submitted:
Factory Model changed from Colonial to Colonial Series
Plate changed from Unknown to 3/4 Split

Anonymous · January 28, 2017

Serial Number 22766392 was reported as accurate.

Changes since this report was submitted:
Factory Model changed from Colonial to Colonial Series