Pocket Watch Database

From the American Horology Archive:

Ball - Waltham

Grade: Official Standard

Manufacturer: Ball - Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: B261921
Grade: Official Standard
Model: 1899
Estimated Production Year: 1918
Run Quantity: 500
Grade/Model Run: 82 of 107
Grade/Model Total Production: 71,861
Size: 16s
Jewels: 21j
Jewel Setting: Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: Circular
Movement Setting: Lever
Plate: 3/4 Plate
Regulator: Reed
Hairspring: Breguet
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 5
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: Yes
Railroad Grade Classification: Class A
U.S. Patents: D32330
Case: Various
Database Version: v52.221
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
212.76
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
1,381.31
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
75.276%
Registry Population: 1 (0.20%)
Research Note: Corresponds to Waltham Serial run starting with #22,261,901

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.


rmwatchandclock Supporter 365 · November 29, 2022

Serial Number B262209 was reported as accurate.

Anonymous · January 31, 2022

Serial Number B262079 was reported as accurate.

geneholt352 2 · April 21, 2021

Serial Number B262076 was reported as accurate.

Anonymous · March 30, 2021

Serial Number B262076 was reported as accurate.

Anonymous · May 26, 2019

Serial Number B262148 was reported as accurate.

Anonymous · June 6, 2018

Serial Number B262209 was reported as accurate.

Anonymous · May 25, 2018

Serial Number B262209 was reported as accurate.

Anonymous · May 5, 2018

Serial Number B262209 was reported as accurate.

Anonymous · December 3, 2017

Serial Number B262227 was reported as accurate.

Anonymous · May 31, 2016

Serial Number B262214 was reported as inaccurate.

Note: I have the watch in my position and it is 21 jewel
Changes since this report was submitted:
Jewels changed from 19j to 21j
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes

Anonymous · August 15, 2015

Serial Number B262039 was reported as inaccurate.

Note: 21 jewel, lever set, RR grade with Ball ORRS dial
Changes since this report was submitted:
Jewels changed from 19j to 21j
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes

Anonymous · March 16, 2015

Serial Number B262242 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Jewels changed from 19j to 21j
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes

zipzillan 9 · November 17, 2014

Serial Number B261933 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Jewels changed from 19j to 21j
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes

Timeswept2 92 · November 17, 2013

Serial Number B262006 was reported as inaccurate.

Note: Jewels: 21
Movement setting: Lever
Railroad Grade: Yes
Changes since this report was submitted:
Jewels changed from 19j to 21j
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes
Plate changed from Unknown to 3/4

69abody 166 · October 26, 2013

Serial Number B262008 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 19j to 21j
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes