Pocket Watch Database

Movement Specs Production Population Registry 1 Value For Sale Save to My Collection Print Page
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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/ball/B603902
Access Date: April 19, 2024
From the American Horology Archive:
Ball - Hamilton

Grade: 999M

Manufacturer: Ball - Hamilton
Movement Serial Number: B603902
Grade: 999M
Model: 1
Estimated Production Year: 1915
Run Quantity: 300
Grade/Model Total Production: 2,300
Size: 16s
Jewels: 21j
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.
21 Jewels
Adjusted
5 Positions
Motor Barrel
Pat.Nov 17 96
Sapphire Pallets
Pat.Dec.8.08.
Trade Mark
Case: Various
Database Version: v52.235
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 6.92
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration		 52.22
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration		 1.994%
Registry Population: 1 (0.33%)
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 is 1 watch in the population registry for this run with 1 image.
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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.

cjbrem Supporter 520 · October 11, 2023

Serial Number B603952 was reported as inaccurate.

Note: This one is marked as "21 Jewels"
Curator Response: Thanks for the report. The database has been updated accordingly.
Changes since this report was submitted:
Grade changed from 999n to 999m
Jewels changed from 23j to 21j

Anonymous · November 12, 2022

Serial Number B603745 was reported as inaccurate.

Note: 21j
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.
Changes since this report was submitted:
Grade changed from 999n to 999m
Jewels changed from 23j to 21j

Anonymous · August 8, 2022

Serial Number B603779 was reported as accurate.

Changes since this report was submitted:
Grade changed from 999n to 999m
Jewels changed from 23j to 21j

Anonymous · December 18, 2021

Serial Number B603779 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 23j to 21j

Anonymous · March 16, 2021

Serial Number B603806 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 23j to 21j

Anonymous · September 17, 2020

Serial Number B603956 was reported as inaccurate.

Note: #B603956 is stamped 21 Jewels, not 23.
Changes since this report was submitted:
Jewels changed from 23j to 21j

Anonymous · December 16, 2018

Serial Number B603772 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 23j to 21j

Anonymous · September 21, 2018

Serial Number B603904 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 23j to 21j

Anonymous · February 8, 2017

Serial Number B603805 was reported as accurate.

Anonymous · January 10, 2017

Serial Number B603805 was reported as accurate.

Anonymous · May 2, 2016

Serial Number B603894 was reported as inaccurate.

Note: change grade to 999M.
Changes since this report was submitted:
Grade changed from 999n to 999m

Anonymous · April 14, 2016

Serial Number B603894 was reported as inaccurate.

Note: all correct plus this early Hamilton /Ball is a
rare Ball/Cobb hairspring and it is a jeweled
motor barrel movement with gold seal.
Changes since this report was submitted:
Grade changed from 999n to 999m

Anonymous · April 11, 2016

Serial Number B603894 was reported as inaccurate.

Note: the plate says 21 jewels,not23.
Changes since this report was submitted:
Grade changed from 999n to 999m
Jewels changed from 23j to 21j

Anonymous · March 26, 2016

Serial Number B603957 was reported as inaccurate.

Note: 21 jewel
Changes since this report was submitted:
Grade changed from 999n to 999m
Jewels changed from 23j to 21j

Anonymous · December 10, 2015

Serial Number B603820 was reported as inaccurate.

Note: a 21 jewel ,motor barrel should be a 999M
Changes since this report was submitted:
Grade changed from 999n to 999m
Jewels changed from 23j to 21j

Anonymous · November 11, 2015

Serial Number B603860 was reported as accurate.

Changes since this report was submitted:
Grade changed from 999n to 999m
Jewels changed from 23j to 21j

Anonymous · June 12, 2015

Serial Number B603820 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Grade changed from 999n to 999m
Jewels changed from 23j to 21j

Anonymous · October 9, 2014

Serial Number B603740 was reported as inaccurate.

Note: 21 jewel
Changes since this report was submitted:
Grade changed from 999n to 999m
Jewels changed from 23j to 21j

Anonymous · July 5, 2014

Serial Number B603745 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Grade changed from 999n to 999m
Jewels changed from 23j to 21j

Anonymous · June 6, 2014

Serial Number B603902 was reported as inaccurate.

Note: Watch is marked "21 Jewels," but it is Mismarked.
Watch has Jeweled Motor Barrel and is Actually a
23 Jewel Model.
Changes since this report was submitted:
Grade changed from 999n to 999m
Jewels changed from 23j to 21j

Anonymous · September 7, 2013

Serial Number B603745 was reported as inaccurate.

Note: 21j
Changes since this report was submitted:
Grade changed from 999n to 999m
Jewels changed from 23j to 21j