Ball - Hamilton Pocket Watch: Serial Number 507020 (Grade 999A)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/ball-hamilton/507020

Access Date: October 31, 2024

From the American Horology Archive:

Ball - Hamilton

Grade: 999A

Manufacturer:	Ball - Hamilton
Movement Serial Number:	507020
Grade:	999A
Model:	1
Estimated Production Year:	1906
Run Quantity:	1,000
Grade/Model Run:	15 of 25
Grade/Model Total Production:	14,000
Size:	18s
Jewels:	21j
Movement Configuration:	Openface
Movement Finish:	Nickel
Finish Pattern:	“Sun-burst” Damascening
Movement Setting:	Lever
Plate:	Full Plate
Double Roller:	Yes
Regulator:	Ball
Adjusted:	Yes
Adjusted # of Positions:	5
Adjusted to Temperature:	Yes
Railroad Grade:	Yes
Movement Markings:	Official RR Standard or Brotherhood Markings
Case:	Various
Database Version:	v52.428
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	42.15
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	318.43
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	12.136%
Registry Population: Scoped for This Run Only	4 (0.40%)
Research Note: Hamilton Hairspring Stud

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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.