Pocket Watch Database

From the American Horology Archive:

Ball - Waltham

Grade: Official Standard

Manufacturer: Ball - Waltham Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: B226150 Question Mark
Grade: Official Standard Question Mark
Model: 1899 Question Mark
Estimated Production Year: 1907 Question Mark
Run Quantity: 200 Question Mark
Grade/Model Run: 52 of 107 Question Mark
Grade/Model Total Production: 71,861 Question Mark
Size: 16s Question Mark
Jewels: 19j Question Mark
Jewel Setting: Gold Settings (Screw-Set) 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
Regulator: Reed Question Mark
Hairspring: Breguet Question Mark
Adjusted: Yes Question Mark
Adjusted to Position: Yes Question Mark
Adjusted # of Positions: 5 Question Mark
Adjusted to Temperature: Yes Question Mark
Adjusted to Isochronism: Yes Question Mark
Railroad Grade: Yes Question Mark
Railroad Grade Classification: Class A Question Mark
U.S. Patents: D32330 Question Mark
Case: Various Question Mark
Database Version: v52.465 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
213.95 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
1,381.31 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
75.276% Question Mark
Registry Population:
Scoped for This Run Only
2 (1.00%) Question Mark
Research Note: Corresponds to Waltham Serial run starting with #15,225,001

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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 · June 23, 2021

Serial Number B226191 was reported as inaccurate.

Note: 19j
Changes since this report was submitted:
Jewels changed from 17j to 19j

Anonymous · April 4, 2018

Serial Number B226069 was reported as inaccurate.

Note: 19 jewls
Changes since this report was submitted:
Jewels changed from 17j to 19j

Anonymous · October 19, 2017

Serial Number B226169 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 17j to 19j

olmike 2 · October 1, 2015

Serial Number B226191 was reported as inaccurate.

Note: Manufactured by E. Howard Watch Co Boston
Changes since this report was submitted:
Jewels changed from 17j to 19j

olmike 2 · October 1, 2015

Serial Number B226191 was reported as inaccurate.

Note: 19 jewels
Changes since this report was submitted:
Jewels changed from 17j to 19j

Anonymous · June 8, 2015

Serial Number B226108 was reported as inaccurate.

Note: 19 jewels
Changes since this report was submitted:
Jewels changed from 17j to 19j

Anonymous · February 14, 2014

Serial Number B226069 was reported as inaccurate.

Note: 19 Jewels
Changes since this report was submitted:
Jewels changed from 17j to 19j
Plate changed from Unknown to 3/4

Anonymous · November 30, 2013

Serial Number B226138 was reported as inaccurate.

Note: jewels 19
Changes since this report was submitted:
Jewels changed from 17j to 19j
Plate changed from Unknown to 3/4