Pocket Watch Database

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

Ball - Hamilton

Grade: 999A

Manufacturer: Ball - Hamilton Question Mark
Movement Serial Number: 507583 Question Mark
Grade: 999A Question Mark
Model: 1 Question Mark
Estimated Production Year: 1907 Question Mark
Run Quantity: 1,000 Question Mark
Grade/Model Run: 15 of 25 Question Mark
Grade/Model Total Production: 14,000 Question Mark
Size: 18s Question Mark
Jewels: 21j Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Finish Pattern: “Sun-burst” Damascening Question Mark
Movement Setting: Lever Question Mark
Plate: Full Plate Question Mark
Double Roller: Yes Question Mark
Regulator: Ball Question Mark
Adjusted: Yes Question Mark
Adjusted # of Positions: 5 Question Mark
Adjusted to Temperature: Yes Question Mark
Railroad Grade: Yes Question Mark
Movement Markings: Official RR Standard or Brotherhood Markings
Case: Various Question Mark
Database Version: v52.501 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
42.15 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
318.43 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
12.136% Question Mark
Registry Population:
Scoped for This Run Only
4 (0.40%) Question Mark
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 · August 8, 2024

Serial Number 507695 was reported as accurate.

Anonymous · April 16, 2023

Serial Number 507167 was reported as accurate.

Anonymous · April 2, 2023

Serial Number 507038 was reported as accurate.

awalker1829 Supporter 74 · March 17, 2023

Serial Number 507583 was reported as accurate.

awalker1829 Supporter 74 · March 3, 2023

Serial Number 507583 was reported as accurate.

awalker1829 Supporter 74 · February 3, 2023

Serial Number 507583 was reported as accurate.

Anonymous · July 16, 2021

Serial Number 507201 was reported as accurate.

Anonymous · December 31, 2019

Serial Number 507423 was reported as accurate.

Anonymous · October 12, 2019

Serial Number 507733 was reported as accurate.

Anonymous · September 10, 2019

Serial Number 507088 was reported as accurate.

Anonymous · March 7, 2019

Serial Number 507888 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · January 24, 2019

Serial Number 507528 was reported as accurate.

Anonymous · May 2, 2018

Serial Number 507088 was reported as accurate.

Anonymous · February 7, 2017

Serial Number 507400 was reported as accurate.

Anonymous · December 3, 2016

Serial Number 507733 was reported as accurate.

Anonymous · May 16, 2016

Serial Number 507506 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · November 15, 2015

Serial Number 507846 was reported as accurate.

Anonymous · June 5, 2015

Serial Number 507272 was reported as accurate.

Anonymous · June 5, 2015

Serial Number 507274 was reported as accurate.

Anonymous · May 28, 2015

Serial Number 507611 was reported as accurate.

Anonymous · February 18, 2015

Serial Number 507552 was reported as accurate.

Anonymous · February 2, 2015

Serial Number 507870 was reported as accurate.

Anonymous · January 24, 2015

Serial Number 507552 was reported as accurate.

Anonymous · January 23, 2015

Serial Number 507552 was reported as accurate.

watchitdude 39 · February 22, 2014

Serial Number 507587 was reported as accurate.

Anonymous · July 20, 2013

Serial Number 507703 was reported as accurate.

Ball - Hamilton Grade 999A Pocket Watch