Pocket Watch Database

From the American Horology Archive:
Waltham Grade 8 Day Pocket Watch

American Waltham Watch Co.

Grade: 8 Day

Manufacturer: Waltham Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 21928780 Question Mark
Grade: 8 Day Question Mark
Model: 1910 Question Mark
Estimated Production Year: 1918 Question Mark
Run Quantity: 8,000 Question Mark
Grade/Model Run: 84 of 139 Question Mark
Grade/Model Total Production: 806,000 Question Mark
Size: 37s Question Mark
Jewels: 7j Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Pendant Question Mark
Plate: 3/4 Plate Question Mark
Hairspring: Breguet Question Mark
Adjusted: No Question Mark
Railroad Grade: No Question Mark
Wind Indicator Available: Yes Question Mark
Wind Indicator Present: Yes Question Mark
Case: Various Question Mark
Run ID: 23790.G84.37S86.371910M86.O14772.P8879.7J7031 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
2,426.68 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
2,208.28 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
2.412% Question Mark
Registry Population:
Scoped for This Run Only
2 (0.03%) 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 · March 15, 2021

Serial Number 21928260 was reported as accurate.

Anonymous · November 2, 2017

Serial Number 21928214 was reported as accurate.

crispy 325 · October 8, 2014

Serial Number 21926995 was reported as accurate.

fordcasa Top Contributor Supporter 444 · June 4, 2014

Serial Number 21926995 was reported as inaccurate.

Note: 37s 8 Day car clock
Nickel 3/4 plate
Wind indicator
Changes since this report was submitted:
Size changed from Unknown to 37
Plate changed from Unknown to 3/4
Waltham Grade 8 Day Pocket Watch