Pocket Watch Database

From the American Horology Archive:

Ball - Hamilton

Grade: 999P

Manufacturer: Ball - Hamilton Question Mark
Movement Serial Number: B620719 Question Mark
Grade: 999P Question Mark
Model: 1 Question Mark
Estimated Production Year: 1926 Question Mark
Run Quantity: 4,000 Question Mark
Grade/Model Run: 5 of 15 Question Mark
Grade/Model Total Production: 40,300 Question Mark
Size: 16s Question Mark
Jewels: 21j Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Finish Pattern: Circular Question Mark
Movement Setting: Lever Question Mark
Plate: 3/4 Plate Question Mark
Barrel: Going 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: D32330 Question Mark
Movement Markings: Official Standard
Ball Watch Co.
Cleveland,O.
21 Jewels
Adjusted
5 Positions
Sapphire Pallets
Trade Mark
Case: Various Question Mark
Database Version: v52.516 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
121.33 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
916.84 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
34.934% Question Mark
Registry Population:
Scoped for This Run Only
9 (0.23%) 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.


MoatsJustin1 top-contributor 5272 · October 26, 2024

Serial Number B621028 was reported as accurate.

cjbrem Supporter 955 · September 26, 2024

Serial Number B623919 was reported as accurate.

Anonymous · February 12, 2023

Serial Number B622241 was reported as accurate.

Anonymous · June 30, 2022

Serial Number B622832 was reported as accurate.

Anonymous · June 1, 2022

Serial Number B623464 was reported as accurate.

Anonymous · April 8, 2022

Serial Number B621298 was reported as accurate.

ebsrods Supporter 130 · April 7, 2022

Serial Number B620436 was reported as accurate.

Anonymous · February 6, 2022

Serial Number B621852 was reported as accurate.

Anonymous · February 4, 2022

Serial Number B621028 was reported as accurate.

Anonymous · January 28, 2022

Serial Number B623194 was reported as accurate.

nemoman3 9 · December 15, 2021

Serial Number B620188 was reported as accurate.

Anonymous · September 25, 2021

Serial Number B621847 was reported as accurate.

Anonymous · September 12, 2021

Serial Number B623585 was reported as accurate.

Anonymous · August 9, 2021

Serial Number B621852 was reported as accurate.

cmdraven 4083 · July 31, 2021

Serial Number B621852 was reported as accurate.

Anonymous · April 13, 2021

Serial Number B623786 was reported as accurate.

Anonymous · March 17, 2021

Serial Number B622546 was reported as accurate.

Anonymous · March 5, 2021

Serial Number B620023 was reported as accurate.

Anonymous · January 14, 2021

Serial Number B622607 was reported as accurate.

Anonymous · January 1, 2021

Serial Number B623013 was reported as accurate.

Laurenconnelly 1 · November 17, 2020

Serial Number B623667 was reported as accurate.

Anonymous · November 17, 2020

Serial Number B623667 was reported as accurate.

Anonymous · November 15, 2020

Serial Number B623194 was reported as accurate.

Anonymous · November 3, 2020

Serial Number B621215 was reported as accurate.

Anonymous · October 23, 2020

Serial Number B621224 was reported as accurate.

Anonymous · September 28, 2020

Serial Number B621881 was reported as accurate.

Anonymous · August 29, 2020

Serial Number B620070 was reported as accurate.

Anonymous · July 29, 2020

Serial Number B621562 was reported as accurate.

Anonymous · June 14, 2020

Serial Number B620479 was reported as accurate.

Andrew9000 85 · June 12, 2020

Serial Number B621147 was reported as accurate.

Anonymous · April 15, 2020

Serial Number B622342 was reported as accurate.

Anonymous · March 20, 2020

Serial Number B620070 was reported as accurate.

021666 41 · March 18, 2020

Serial Number B623421 was reported as accurate.

Anonymous · March 12, 2020

Serial Number B620685 was reported as accurate.

Anonymous · March 11, 2020

Serial Number B623257 was reported as accurate.

ralph1 113 · March 1, 2020

Serial Number B620028 was reported as accurate.

Anonymous · February 21, 2020

Serial Number B622797 was reported as accurate.

Anonymous · February 20, 2020

Serial Number B621400 was reported as accurate.

Anonymous · February 18, 2020

Serial Number B620028 was reported as accurate.

Anonymous · February 13, 2020

Serial Number B623276 was reported as accurate.

Anonymous · December 31, 2019

Serial Number B620588 was reported as accurate.

Anonymous · November 15, 2019

Serial Number B621324 was reported as accurate.

Anonymous · November 11, 2019

Serial Number B620308 was reported as accurate.

Anonymous · October 2, 2019

Serial Number B623257 was reported as accurate.

Anonymous · September 18, 2019

Serial Number B623447 was reported as accurate.

Anonymous · September 15, 2019

Serial Number B623447 was reported as accurate.

Anonymous · July 22, 2019

Serial Number B622364 was reported as accurate.

Anonymous · April 10, 2019

Serial Number B623957 was reported as accurate.

Anonymous · February 25, 2019

Serial Number B621217 was reported as accurate.

Anonymous · February 10, 2019

Serial Number B621839 was reported as accurate.