Ball - Hamilton Pocket Watch: Serial Number 42548 (Grade 999B)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/ball-hamilton/42548

Access Date: January 17, 2025

From the American Horology Archive:

Ball - Hamilton

Grade: 999B

Manufacturer:	Ball - Hamilton
Movement Serial Number:	42548
Grade:	999B
Model:	1
Estimated Production Year:	1898
Run Quantity:	100
Grade/Model Run:	15 of 21
Grade/Model Total Production:	3,300
Size:	18s
Jewels:	17j
Movement Configuration:	Openface
Movement Finish:	Nickel
Finish Pattern:	Circular
Movement Setting:	Lever
Plate:	Full Plate
Double Roller:	Yes
Regulator:	Ball
Adjusted:	Yes
Adjusted # of Positions:	5
Adjusted to Temperature:	Yes
Railroad Grade:	Yes
U.S. Patents:	D26267, 565955
Movement Markings:	Official RR Standard Ball & Co. Cleveland. Adjusted 17 Jewels Sapphire Pallets Safety Pinion Trade Mark Patented Nov.17.96 Pat.Aug.18'96.
Case:	Various
Database Version:	v52.560
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	9.94
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	74.97
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	2.861%
Research Note: “Patented” on Barrel Bridge

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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.