Pocket Watch Database

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

Ball - Hamilton

Grade: 999A

Manufacturer: Ball - Hamilton
Movement Serial Number: 643713
Grade: 999A
Model: 1
Estimated Production Year: 1910
Run Quantity: 500
Grade/Model Run: 20 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: v52.219
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%
Research Note: Hamilton Hairspring Stud

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

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 · February 22, 2023

Serial Number 643851 was reported as accurate.

CechBro Supporter 35 · December 8, 2020

Serial Number 643587 was reported as accurate.

Anonymous · November 1, 2020

Serial Number 643508 was reported as accurate.

Anonymous · June 20, 2020

Serial Number 643641 was reported as accurate.

Anonymous · April 20, 2020

Serial Number 643997 was reported as accurate.

Anonymous · February 29, 2020

Serial Number 643997 was reported as accurate.

Anonymous · January 31, 2019

Serial Number 643574 was reported as accurate.

Anonymous · January 11, 2018

Serial Number 643997 was reported as accurate.

Anonymous · November 22, 2016

Serial Number 643598 was reported as accurate.

Anonymous · October 20, 2016

Serial Number 643593 was reported as accurate.

Gasperoff Supporter 727 · February 19, 2016

Serial Number 643997 was reported as accurate.

Anonymous · October 31, 2015

Serial Number 643968 was reported as accurate.

Anonymous · July 13, 2015

Serial Number 643910 was reported as accurate.

Anonymous · June 2, 2015

Serial Number 643968 was reported as accurate.

Anonymous · January 3, 2014

Serial Number 643988 was reported as accurate.

Ball - Hamilton Grade 999A Pocket Watch