Ball - Hamilton Pocket Watch: Serial Number 1B27180 (Grade 999B)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/ball-hamilton/1B27180/link

Access Date: December 22, 2024

From the American Horology Archive:

Ball - Hamilton

Grade: 999B

Manufacturer:	Ball - Hamilton
Movement Serial Number:	1B27180
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:	v52.517
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	86.71
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: Scoped for This Run Only	9 (0.32%)

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Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
There are 9 watches in the population registry for this run with 6 images. Create a FREE account or login to view the population registry and add your watch to the registry. Create a Free Account

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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 · November 23, 2024

Serial Number 1B25728 was reported as accurate.

Anonymous · August 25, 2024

Serial Number 1B27080 was reported as inaccurate.

Note: Hamilton 992B

Anonymous · August 25, 2024

Serial Number 1B27079 was reported as inaccurate.

Note: Hamilton 992B

ebsrods Supporter 130 · December 20, 2023

Serial Number 1B26712 was reported as accurate.

Anonymous · February 2, 2023

Serial Number 1B25747 was reported as accurate.

Anpavl Supporter 43 · 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 24 · 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.