Pocket Watch Database

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

Ball - Hamilton

Grade: 999A

Manufacturer: Ball - Hamilton
Movement Serial Number: 118624
Grade: 999A
Model: 1
Estimated Production Year: 1901
Run Quantity: 100
Grade/Model Run: 10 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
Ball & Co. Cleveland.
Adjusted
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: 3 (3.00%)
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 · November 15, 2020

Serial Number 118658 was reported as accurate.

Anonymous · April 7, 2020

Serial Number 118660 was reported as accurate.

Anonymous · December 11, 2019

Serial Number 118661 was reported as accurate.

fpomeroy 7 · November 20, 2018

Serial Number 118624 was reported as accurate.

jacobwalls07 143 · October 31, 2018

Serial Number 118660 was reported as accurate.

Anonymous · April 2, 2017

Serial Number 118677 was reported as accurate.

Ball - Hamilton Grade 999A Pocket Watch