Waltham Pocket Watch: Serial Number 21241800 (Grade No. 1420)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/waltham/21241800/link

Access Date: November 27, 2024

From the American Horology Archive:

American Waltham Watch Co.

Grade: No. 1420

Manufacturer:	Waltham
Manufacturer Location:	Waltham, Massachusetts
Movement Serial Number:	21241800
Grade:	No. 1420
Model:	Colonial Series
Estimated Production Year:	1917
Run Quantity:	1,000
Grade/Model Run:	20 of 31
Grade/Model Total Production:	51,000
Size:	14s
Jewels:	15j
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Setting:	Pendant
Plate:	3/4 Split Plate
Regulator:	Patent
Hairspring:	Breguet
Adjusted:	No
Railroad Grade:	No
Case:	Various
Run ID:	23530.G20.14S2495.M79.O14616.P8622.15J5516
Data Research:	1954 Waltham "Gray Book" List NAWCC Waltham Serial Digest
Database Version:	v52.467
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	149.03
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	135.62
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	0.148%
Registry Population: Scoped for This Run Only	5 (0.50%)
Research Note: Waltham Serial Ledgers designate this run as "Col. Ser." (Colonial Series). Pillar plate measures as 14s while movement is based on the 12s Model 1894.

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Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
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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.