Pocket Watch Database

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

Ball - Hamilton

Grade: 999E

Manufacturer: Ball - Hamilton
Movement Serial Number: 170941
Grade: 999E
Model: 1
Estimated Production Year: 1902
Run Quantity: 100
Grade/Model Run: 4 of 6
Grade/Model Total Production: 1,450
Size: 18s
Jewels: 17j
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: Circular
Movement Setting: Lever
Plate: Full Plate
Regulator: Ball
Adjusted: Yes
Railroad Grade: Yes
U.S. Patents: D25695, 565955
Movement Markings: Official RR Standard
The Ball Watch Co. Cleveland.
Adjusted
Single Roller.
17 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
4.34
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
32.88
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
1.257%
Registry Population: 2 (2.00%)
Research Note: For use on RR with fewer requirements

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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 · July 14, 2023

Serial Number 170944 was reported as accurate.

ebsrods Supporter 108 · July 15, 2020

Serial Number 170988 was reported as accurate.

LDJolly 2 · February 1, 2016

Serial Number 170941 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · July 9, 2015

Serial Number 170962 was reported as accurate.

Anonymous · June 23, 2015

Serial Number 170962 was reported as inaccurate.

Note: # of positions: 5
Additionally this movement is signed "single
roller"

Anonymous · June 23, 2015

Serial Number 170962 was reported as accurate.

Anonymous · June 19, 2015

Serial Number 170962 was reported as accurate.

Ball - Hamilton Grade 999E Pocket Watch