Ball - Hamilton Pocket Watch: Serial Number B604884 (Grade 999N)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/ball-hamilton/B604884

Access Date: April 23, 2024

From the American Horology Archive:

Ball - Hamilton

Grade: 999N

Manufacturer:	Ball - Hamilton
Movement Serial Number:	B604884
Grade:	999N
Model:	1
Estimated Production Year:	1920
Run Quantity:	900
Grade/Model Run:	3 of 7
Grade/Model Total Production:	5,700
Size:	16s
Jewels:	23j
Movement Configuration:	Openface
Movement Finish:	Nickel
Finish Pattern:	Circular
Movement Setting:	Lever
Plate:	3/4 Plate
Barrel:	Motor
Adjusted:	Yes
Adjusted # of Positions:	5
Adjusted to Temperature:	Yes
Railroad Grade:	Yes
U.S. Patents:	D26267, D32330
Movement Markings:	Official RR Standard Ball Watch Co. Cleveland,O. 23 Jewels Adjusted 5 Positions Motor Barrel Pat.Nov 17 96 Sapphire Pallets Pat.Dec.8.08. Trade Mark
Case:	Various
Database Version:	v52.245
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	17.16
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	129.58
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	4.941%
Registry Population:	9 (1.00%)
Research Note: Gold RR Seal, Ball Patent Hairspring Stud

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Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
There are 9 watches in the population registry for this run with 3 images. Create a FREE account or login to view the population registry and add your watch to the registry. Create a Free Account

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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.

JointVenture Supporter 102 · October 13, 2023

Serial Number B604282 was reported as accurate.

Anonymous · April 27, 2023

Serial Number B604282 was reported as accurate.

Anonymous · December 5, 2022

Serial Number B604491 was reported as accurate.

tfieser Supporter 3 · January 1, 2022

Serial Number B604355 was reported as accurate.

Anonymous · October 19, 2021

Serial Number B604529 was reported as accurate.

Blicquer Supporter 75 · October 9, 2021

Serial Number B604532 was reported as accurate.

Anonymous · June 3, 2021

Serial Number B604811 was reported as accurate.

Anonymous · January 24, 2021

Serial Number B604406 was reported as inaccurate.

Note: Info is correct as far as it goes, but, unlike
with other serial numbers you've done, YOU DID NOT
INCLUDE THE RUN TOTAL which is important in
determining rarity.

Curator Response: Run total is not included because these runs are fairly mixed, and run totals and estimated production would be wildly incorrect. Hopefully, more research can be compelted in the near future to provide better insight into how these runs may be split.