Pocket Watch Database

From the American Horology Archive:
Ball - Hamilton Grade 999A Pocket Watch

Ball - Hamilton

Grade: 999A

Manufacturer: Ball - Hamilton
Movement Serial Number: 548623
Grade: 999A
Model: 1
Estimated Production Year: 1908
Run Quantity: 1,000
Grade/Model Run: 18 of 25
Grade/Model Total Production: 14,000
Size: 18s
Jewels: 21j
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: Sunburst
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: D25695, 565955
Movement Markings: Official RR Standard
999
The Ball Watch Co. Cleveland.
Adjusted 5 Positions
Double Roller.
21 Jewels
Sapphire Pallets
Safety Pinion
Trade Mark
Patented June 30'96
Pat.Aug.18'96.
Case: Various
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
41.91
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: 4 (0.40%)
Research Note: Hamilton Hairspring Stud

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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.


Anonymous · December 1, 2022

Serial Number 548201 was reported as accurate.

Anonymous · July 19, 2022

Serial Number 548595 was reported as accurate.

Anonymous · December 2, 2021

Serial Number 548427 was reported as accurate.

Anonymous · August 1, 2021

Serial Number 548638 was reported as accurate.

Anonymous · August 1, 2021

Serial Number 548410 was reported as accurate.

Artworks 8 · July 29, 2021

Serial Number 548810 was reported as accurate.

Anonymous · July 17, 2021

Serial Number 548158 was reported as accurate.

netmind 45 · October 1, 2020

Serial Number 548623 was reported as accurate.

Artworks 8 · July 23, 2020

Serial Number 548810 was reported as accurate.

Anonymous · June 1, 2020

Serial Number 548235 was reported as accurate.

Anonymous · November 11, 2019

Serial Number 548783 was reported as accurate.

Anonymous · October 11, 2019

Serial Number 548427 was reported as accurate.

dfchong 837 · August 3, 2019

Serial Number 548859 was reported as accurate.

Anonymous · June 30, 2019

Serial Number 548307 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · April 7, 2019

Serial Number 548503 was reported as accurate.

Anonymous · February 1, 2019

Serial Number 548198 was reported as accurate.

barberr1 67 · May 11, 2018

Serial Number 548237 was reported as accurate.

Anonymous · September 2, 2016

Serial Number 548674 was reported as accurate.

Anonymous · August 30, 2016

Serial Number 548796 was reported as accurate.

Anonymous · August 18, 2016

Serial Number 548796 was reported as accurate.

Anonymous · August 18, 2016

Serial Number 548796 was reported as accurate.

Anonymous · August 18, 2016

Serial Number 548796 was reported as accurate.

Anonymous · April 13, 2016

Serial Number 548165 was reported as accurate.

Anonymous · April 11, 2016

Serial Number 548165 was reported as accurate.

Anonymous · March 2, 2016

Serial Number 548569 was reported as accurate.

philsan1a 221 · June 2, 2015

Serial Number 548374 was reported as accurate.

philsan1a 221 · June 2, 2015

Serial Number 548374 was reported as accurate.

philsan1a 221 · June 2, 2015

Serial Number 548374 was reported as accurate.

Anonymous · March 13, 2015

Serial Number 548901 was reported as accurate.

Anonymous · December 24, 2014

Serial Number 548538 was reported as accurate.

Anonymous · November 13, 2014

Serial Number 548390 was reported as accurate.

Anonymous · November 8, 2014

Serial Number 548837 was reported as accurate.

Anonymous · December 6, 2013

Serial Number 548832 was reported as accurate.

Ball - Hamilton Grade 999A Pocket Watch