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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/ball-waltham/B270442
Access Date: September 21, 2024
From the American Horology Archive:
Ball - Waltham

Grade: Official Standard

Manufacturer: Ball - Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: B270442
Grade: Official Standard
Model: 1899
Estimated Production Year: 1921
Run Quantity: 1,000
Grade/Model Run: 93 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: v52.400
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 213.95
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:
Scoped for This Run Only		4 (0.40%)
Research Note: Corresponds to Waltham Serial run starting with #24,270,001
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Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
There are 4 watches in the population registry for this run with 1 image.
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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.

awalker1829 Supporter 71 · July 3, 2024

Serial Number B270442 was reported as accurate.

Anonymous · September 21, 2021

Serial Number B270556 was reported as accurate.

Anonymous · August 28, 2021

Serial Number B271000 was reported as accurate.

Anonymous · January 31, 2021

Serial Number B270841 was reported as accurate.

Anonymous · January 4, 2021

Serial Number B270841 was reported as accurate.

gergnosretep Supporter 26 · November 4, 2020

Serial Number B270656 was reported as accurate.

Anonymous · October 15, 2020

Serial Number B270350 was reported as accurate.

dfchong 837 · September 3, 2020

Serial Number B270171 was reported as accurate.

Anonymous · September 2, 2020

Serial Number B270750 was reported as accurate.

Anonymous · June 27, 2020

Serial Number B270683 was reported as accurate.

Anonymous · December 18, 2019

Serial Number B270833 was reported as accurate.

Anonymous · August 11, 2019

Serial Number B270701 was reported as accurate.

Anonymous · August 3, 2019

Serial Number B270758 was reported as accurate.

Anonymous · July 16, 2019

Serial Number B270758 was reported as accurate.

Anonymous · April 30, 2019

Serial Number B270474 was reported as accurate.

Anonymous · April 4, 2019

Serial Number B270476 was reported as accurate.

Anonymous · March 22, 2019

Serial Number B270867 was reported as accurate.

Anonymous · January 25, 2019

Serial Number B270690 was reported as accurate.

Anonymous · March 9, 2018

Serial Number B270312 was reported as accurate.

Anonymous · March 6, 2018

Serial Number B270288 was reported as accurate.

Walt1943 Supporter 9 · February 20, 2018

Serial Number B270753 was reported as accurate.

Anonymous · July 30, 2017

Serial Number B270155 was reported as accurate.

Anonymous · July 16, 2017

Serial Number B270501 was reported as accurate.

Anonymous · January 5, 2017

Serial Number B270639 was reported as accurate.

Anonymous · June 27, 2016

Serial Number B270873 was reported as accurate.

Anonymous · June 22, 2016

Serial Number B270873 was reported as accurate.

Anonymous · November 8, 2015

Serial Number B270861 was reported as accurate.

Anonymous · June 25, 2014

Serial Number B270395 was reported as accurate.

silversonic 2 · April 25, 2014

Serial Number B270772 was reported as accurate.

rocket00 236 · February 12, 2014

Serial Number B270025 was reported as accurate.

Anonymous · January 8, 2014

Serial Number B270108 was reported as accurate.