Pocket Watch Database


From the American Horology Archive:
Illinois Grade Bunn Special Pocket Watch

Illinois Watch Co.

Grade: Bunn Special

Manufacturer: Illinois Question Mark
Manufacturer Location: Springfield, Illinois Question Mark
Movement Serial Number: 4109398 Question Mark
Grade: Bunn Special Question Mark
Variation: PennSpec Question Mark
Model: 11 Question Mark
Estimated Production Year: 1922 Question Mark
Run Quantity: 20 Question Mark
Grade/Model Run: 24 of 29 Question Mark
Grade/Model Total Production: 13,270 Question Mark
Variant Est. Production: 20 (16S-M11-23J-ONL-A6PTI-PENNSPEC) Question Mark
Size: 16s Question Mark
Jewels: 23j Question Mark
Jewel Material: Ruby Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Finish Pattern: Pennsylvania Special Question Mark
Movement Setting: Lever Question Mark
Plate: 3/4 Plate Question Mark
Double Roller: Yes Question Mark
Barrel: 48-Hr. Motor Question Mark
Regulator: Reed Question Mark
Hairspring: Breguet Question Mark
Adjusted: Yes Question Mark
Adjusted to Position: Yes Question Mark
Adjusted # of Positions: 6 Question Mark
Adjusted to Temperature: Yes Question Mark
Adjusted to Isochronism: Yes Question Mark
Railroad Grade: Yes Question Mark
Dial Feet Locations: 17.5, 39.0, 58.0 Question Mark
Case Screw Locations: 3.0, 38.0 Question Mark
Case: Various Question Mark
Run ID: 11464.G478.16S3675.1611M49.O6223.L6810.23J243 Question Mark
Research References: American Pocket Watches: Illinois Watch Co.: Volume 2. (William Meggers & Roy Ehrhardt)
The 16 Size Illinois Bunn Special, 1913-1948. (Michael Chamelin)
Question Mark
Database Version: v52.433 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
39.95 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
134.76 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.233% Question Mark
Registry Population:
Scoped for This Run Only
1 (5.00%) Question Mark
$ Estimated Value (12 Month Change): 8.14% Analyzing 304 Sales Question Mark
Research Note: #4109381: Pennsylvania Special [Chamelin]. #4109398: Verified as "Pennsylvania Special" [eBay].

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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.


billreid 143 · January 29, 2024

Serial Number 4109398 was reported as inaccurate.

Note: Mostly accurate but... Dial & movement marked
Pennsylvania Special & movement is 2-tone.
Currently up for bid:
https://www.ebay.com/itm/126296561471

Anonymous · December 5, 2017

Serial Number 4109391 was reported as inaccurate.

Note: Plate layout seems the same, but marked
"Pennsylvania Special" on movement and dial.
Illinois Grade Bunn Special Pocket Watch