Pocket Watch Database

From the American Horology Archive:
Illinois Grade Mason Pocket Watch

Illinois Watch Co.

Grade: Mason

Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 15993
Grade: Mason
Model: 1
Estimated Production Date: May 1874
Run Quantity: 1,000
Grade/Model Run: 7 of 16
Grade/Model Total Production: 10,300
Size: 18s
Jewels: 7j
Movement Configuration: Adaptable
Movement Finish: Gilt
Movement Setting: Key
Plate: Full Plate
Barrel: Going
Balance Type: Uncut Expansion
Train: Coarse
Regulator: Plain
Hairspring: Flat
Standard Dial Type: Single-Sunk
Adjusted: No
Railroad Grade: No
Dial Feet Locations: 16.5, 36.5, 53.0
Case Screw Locations: O-36.5, H-51.5
Movement Markings: Mason
Springfield, Ill.
Patent Pinion
Case: Various
Run ID: 23.G7.18S23.181M23.A23.K23.7J7
Database Version: v51.900
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
30.29
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
104.57
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.181%
Registry Population: 7 (0.70%)

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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 · January 3, 2020

Serial Number 15188 was reported as inaccurate.

No further details were submitted with the report.

Bobhmcs 6 · October 28, 2019

Serial Number 15828 was reported as inaccurate.

Note: This is a Swiss Wallonia Brevet 21j ruby set
pocket watch with a Illinois movement S/N Brevet
N15828 in a Wallonia .800 sterling silver and 7k
Rose Gold Open Face snap back and dust cover case.
The crystal is pristine and it has a plain no logo
enamel face with Arabic numerals in fine condition
except for Mark's in the 8 and 9 position. The
second hand is not original. Fine running
condition but gains 5 mins every 12 hours. It is
Pendant wound and set. I hope this is appropriate
information.
Curator Response: Thanks for the report. The database covers American-made watches, so the lookup information will not be relevant to your watch.

Anonymous · June 27, 2019

Serial Number 15050 was reported as inaccurate.

Note: This one is marked ( Interior ).
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.

bubba70 543 · April 25, 2019

Serial Number 15746 was reported as accurate.

nicnic Supporter 354 · May 5, 2018

Serial Number 15993 was reported as accurate.

esoxhunter Top Contributor Supporter 125 · March 28, 2018

Serial Number 15250 was reported as accurate.

Anonymous · January 22, 2018

Serial Number 15422 was reported as accurate.

Anonymous · December 22, 2014

Serial Number 15465 was reported as accurate.

rocket00 236 · January 26, 2014

Serial Number 15626 was reported as accurate.

pmwas1 97 · November 10, 2013

Serial Number 15936 was reported as inaccurate.

Note: Once again - I've marked that accurate, but masons
were always lower grade gilded and unadjusted so
this could be corrected here.

Anonymous · April 27, 2013

Serial Number 15936 was reported as accurate.

Illinois Grade Mason Pocket Watch