Pocket Watch Database

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

Ball - Hamilton

Grade: 999B

Manufacturer: Ball - Hamilton Question Mark
Movement Serial Number: 170009 Question Mark
Grade: 999B Question Mark
Model: 1 Question Mark
Estimated Production Year: 1902 Question Mark
Run Quantity: 100 Question Mark
Grade/Model Run: 21 of 21 Question Mark
Grade/Model Total Production: 3,300 Question Mark
Size: 18s Question Mark
Jewels: 17j Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Finish Pattern: Circular 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
U.S. Patents: D26267, 565955, D24446 Question Mark
Movement Markings: Official RR Standard
The Ball Watch Co. Cleveland.
Adjusted
17 Jewels
Sapphire Pallets
Safety Pinion
Trade Mark
Patented Nov.17.96
Pat.Aug.18'96.
Case: Various Question Mark
Database Version: v52.528 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
9.93 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
74.97 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
2.861% Question Mark
Registry Population:
Scoped for This Run Only
1 (1.00%) Question Mark
Research Note: Patented Pierced "Balloon" Hands. , “Patented” on Barrel Bridge

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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.


texnet 684 · March 24, 2020

Serial Number 170009 was reported as accurate.

Changes since this report was submitted:
Grade changed from 999e to 999b
Double Roller changed from No to Yes

Andrew9000 85 · January 23, 2020

Serial Number 170009 was reported as accurate.

Changes since this report was submitted:
Grade changed from 999e to 999b
Double Roller changed from No to Yes

singing3 Supporter 43 · October 21, 2019

Serial Number 170094 was reported as accurate.

Changes since this report was submitted:
Grade changed from 999e to 999b
Double Roller changed from No to Yes

TimeAntiquarian Founder Research Expert Historian Top Contributor Supporter 171 · June 20, 2014

Serial Number 170033 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Full
Ball - Hamilton Grade 999B Pocket Watch