Pocket Watch Database

From the American Horology Archive:

Ball - Hamilton

Grade: 999P

Manufacturer: Ball - Hamilton Question Mark
Movement Serial Number: B650496 Question Mark
Grade: 999P Question Mark
Model: 1 Question Mark
Estimated Production Year: 1940 Question Mark
Run Quantity: 2,000 Question Mark
Grade/Model Run: 14 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: v52.518 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
17 (0.85%) Question Mark
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 · June 12, 2024

Serial Number B650119 was reported as accurate.

Anonymous · September 26, 2022

Serial Number B651458 was reported as accurate.

Anonymous · March 20, 2022

Serial Number B651080 was reported as accurate.

sanderson 35 · September 15, 2021

Serial Number B651254 was reported as accurate.

PastranoC 6 · July 11, 2021

Serial Number B650098 was reported as accurate.

Anonymous · January 28, 2021

Serial Number B650733 was reported as accurate.

Anonymous · September 25, 2020

Serial Number B651991 was reported as accurate.

Anonymous · December 30, 2019

Serial Number B650690 was reported as accurate.

Anonymous · December 23, 2019

Serial Number B650532 was reported as accurate.

Anonymous · November 16, 2019

Serial Number B651524 was reported as accurate.

Anonymous · June 3, 2019

Serial Number B651743 was reported as accurate.

Anonymous · June 2, 2019

Serial Number B650093 was reported as accurate.

Anonymous · April 16, 2019

Serial Number B651668 was reported as accurate.

mickroid 49 · January 23, 2019

Serial Number B651249 was reported as accurate.

Anonymous · December 9, 2018

Serial Number B651074 was reported as accurate.

Anonymous · July 18, 2018

Serial Number B651286 was reported as accurate.

Anonymous · March 31, 2018

Serial Number B650488 was reported as accurate.

Anonymous · March 4, 2018

Serial Number B651630 was reported as accurate.

Anonymous · February 24, 2018

Serial Number B650224 was reported as accurate.

Joerealtor 74 · February 16, 2018

Serial Number B651074 was reported as accurate.

Anonymous · January 23, 2018

Serial Number B651442 was reported as accurate.

Anonymous · December 10, 2017

Serial Number B650834 was reported as accurate.

Anonymous · May 9, 2017

Serial Number B651320 was reported as accurate.

Anonymous · October 21, 2016

Serial Number B650643 was reported as inaccurate.

Note: It is a lever action movement
Changes since this report was submitted:
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes

Anonymous · June 25, 2016

Serial Number B651409 was reported as inaccurate.

Note: Mine is 21 jewels, adjusted 5 positions, lever
set, and is therefore railroad grade.
Cheers. duffy l.
Changes since this report was submitted:
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes

Anonymous · May 29, 2016

Serial Number B651980 was reported as inaccurate.

Note: This movement is Lever Set
Changes since this report was submitted:
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes

bwalder 137 · May 22, 2016

Serial Number B651409 was reported as inaccurate.

Note: Pendant set

Anonymous · May 13, 2016

Serial Number B651409 was reported as accurate.

SKINNERX 14 · March 16, 2016

Serial Number B651489 was reported as accurate.

Anonymous · December 30, 2015

Serial Number B650352 was reported as accurate.

Anonymous · August 20, 2015

Serial Number B651472 was reported as accurate.

Anonymous · August 19, 2015

Serial Number B650093 was reported as accurate.

Anonymous · March 29, 2015

Serial Number B650382 was reported as accurate.

Anonymous · March 22, 2015

Serial Number B650985 was reported as accurate.

Gasperoff Supporter 727 · March 6, 2015

Serial Number B650877 was reported as accurate.

Brycef 107 · February 12, 2015

Serial Number B651868 was reported as accurate.

redsox1 74 · November 19, 2014

Serial Number B650592 was reported as accurate.

Anonymous · August 27, 2014

Serial Number B650649 was reported as accurate.

Anonymous · August 27, 2014

Serial Number B650649 was reported as accurate.

toothsls 44 · July 5, 2014

Serial Number B651579 was reported as accurate.

Anonymous · March 10, 2014

Serial Number B650352 was reported as accurate.

Anonymous · February 21, 2014

Serial Number B650554 was reported as accurate.

Anonymous · February 1, 2014

Serial Number B651895 was reported as accurate.

Anonymous · January 13, 2014

Serial Number B651088 was reported as accurate.

51Cards 19 · January 6, 2014

Serial Number B651211 was reported as accurate.

rocket00 236 · January 3, 2014

Serial Number B651211 was reported as accurate.

captnemo101 Supporter 19 · June 16, 2013

Serial Number B651651 was reported as accurate.

captnemo101 Supporter 19 · June 16, 2013

Serial Number B651499 was reported as accurate.

captnemo101 Supporter 19 · June 16, 2013

Serial Number B650135 was reported as accurate.