Pocket Watch Database

From the American Horology Archive:
Ball - Hamilton Grade 999B Pocket Watch

Ball - Hamilton

Grade: 999B

Manufacturer: Ball - Hamilton
Movement Serial Number: 1B27295
Grade: 999B
Model: 5
Estimated Production Year: 1954
Run Quantity: 2,800
Grade/Model Run: 11 of 12
Grade/Model Total Production: 28,800
Size: 16s
Jewels: 21j
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: Circular
Movement Setting: Lever
Plate: 3/4 Plate
Adjusted: Yes
Adjusted # of Positions: 6
Adjusted to Temperature: Yes
Railroad Grade: Yes
U.S. Patents: D32330
Movement Markings: Official Standard
Ball Watch Co.
Cleveland,O.
999B
21 Jewels
6 Positions Adjusted
Trade Mark
Case: Various
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
86.23
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
655.18
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
24.965%
Registry Population: 9 (0.32%)

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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.


ebsrods Supporter 108 · December 20, 2023

Serial Number 1B26712 was reported as accurate.

Anonymous · February 2, 2023

Serial Number 1B25747 was reported as accurate.

Anpavl Supporter 18 · July 29, 2022

Serial Number 1B26067 was reported as accurate.

Anonymous · January 16, 2022

Serial Number 1B27097 was reported as inaccurate.

Note: clearly signed/finished as a Hamilton 992B
presently available to view on ebay @ item #
334289019643
Curator Response: Thanks for the report. This information has been noted in the research notes for this run.

jskirk621 Supporter 21 · October 15, 2021

Serial Number 1B27023 was reported as inaccurate.

Note: This is a type 4 992B with the 999B serial number.

Anonymous · October 4, 2021

Serial Number 1B25831 was reported as accurate.

Anonymous · June 25, 2021

Serial Number 1B26958 was reported as accurate.

Roberthunigan 25 · January 15, 2021

Serial Number 1B27532 was reported as accurate.

Roberthunigan 25 · December 21, 2020

Serial Number 1B27532 was reported as accurate.

db2469 12 · December 14, 2020

Serial Number 1B27070 was reported as inaccurate.

Note: this movement has a plate with this serial number
on it but it is a 992B as shown in my collection
here...they are extremely rare
Curator Response: Thanks for the report and images.

Anonymous · August 29, 2020

Serial Number 1B27058 was reported as inaccurate.

Note: finished and signed as a Hamilton 992B
can be seen on ebay at this time
item #154059227003
Curator Response: Verified. [eBay #154059227003]

Anonymous · July 15, 2020

Serial Number 1B25934 was reported as accurate.

Anonymous · June 8, 2020

Serial Number 1B26995 was reported as inaccurate.

Note: I own this watch and it has a circular pattern,
even though it’s in the serial no. Range of the
parallel model
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.

Anonymous · January 21, 2020

Serial Number 1B25766 was reported as accurate.

Anonymous · October 28, 2019

Serial Number 1B27233 was reported as accurate.

Anonymous · October 24, 2019

Serial Number 1B26695 was reported as accurate.

Anonymous · October 8, 2019

Serial Number 1B26631 was reported as accurate.

walter2 56 · August 11, 2019

Serial Number 1B27180 was reported as inaccurate.

Note: all OK except Straight line damascening

Lowrider 1 · July 2, 2019

Serial Number 1B27194 was reported as inaccurate.

Note: Straight line damascening on this movement
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.

Anonymous · December 28, 2018

Serial Number 1B25464 was reported as accurate.

Anonymous · December 25, 2018

Serial Number 1B26482 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · December 1, 2018

Serial Number 1B26995 was reported as accurate.

Anonymous · November 9, 2018

Serial Number 1B25684 was reported as accurate.

Anonymous · November 9, 2018

Serial Number 1B25684 was reported as accurate.

Anonymous · September 23, 2018

Serial Number 1B25542 was reported as accurate.

Anonymous · August 1, 2018

Serial Number 1B26546 was reported as accurate.

Anonymous · July 16, 2018

Serial Number 1B26558 was reported as accurate.

Anonymous · June 24, 2018

Serial Number 1B27375 was reported as accurate.

Anonymous · June 2, 2018

Serial Number 1B25345 was reported as accurate.

Anonymous · May 19, 2018

Serial Number 1B25880 was reported as accurate.

Anonymous · May 14, 2018

Serial Number 1B25880 was reported as accurate.

Anonymous · May 12, 2018

Serial Number 1B25880 was reported as accurate.

Anonymous · May 7, 2018

Serial Number 1B25472 was reported as accurate.

Anonymous · April 19, 2018

Serial Number 1B26404 was reported as accurate.

Anonymous · April 19, 2018

Serial Number 1B25472 was reported as accurate.

Anonymous · March 7, 2018

Serial Number 1B27375 was reported as accurate.

Anonymous · March 5, 2018

Serial Number 1B26743 was reported as accurate.

Anonymous · December 9, 2017

Serial Number 1B25481 was reported as accurate.

Anonymous · December 4, 2017

Serial Number 1B27334 was reported as accurate.

Anonymous · November 16, 2017

Serial Number 1B27178 was reported as accurate.

Anonymous · October 29, 2017

Serial Number 1B26737 was reported as accurate.

Anonymous · October 1, 2017

Serial Number 1B26743 was reported as accurate.

Anonymous · September 8, 2017

Serial Number 1B27462 was reported as accurate.

Anonymous · July 6, 2017

Serial Number 1B26404 was reported as accurate.

Anonymous · June 30, 2017

Serial Number 1B26763 was reported as accurate.

Anonymous · June 19, 2017

Serial Number 1B25776 was reported as accurate.

Anonymous · June 14, 2017

Serial Number 1B25776 was reported as accurate.

Anonymous · March 20, 2017

Serial Number 1B26932 was reported as inaccurate.

Note: 1b26932 has straight line demaskeen

Anonymous · March 13, 2017

Serial Number 1B26946 was reported as inaccurate.

Note: Movement has straight line damaskeen.
Curator Response: Thanks for submitting this information. Please upload a photo to your collection so we can take a closer look.

Anonymous · January 10, 2017

Serial Number 1B26404 was reported as accurate.

Ball - Hamilton Grade 999B Pocket Watch