Illinois Pocket Watch: Serial Number 50678 (Grade Stuart)

Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/illinois/50678

Access Date: April 19, 2024

From the American Horology Archive:

Illinois Watch Co.

Grade: Stuart

Movement may alternatively be Bunn Model 2 (15 Jewels).

Manufacturer:	Illinois
Manufacturer Location:	Springfield, Illinois
Movement Serial Number:	50678
Grade:	Stuart
Model:	3
Estimated Production Date:	March 1879
Run Quantity:	100
Grade/Model Run:	1 of 13
Grade/Model Total Production:	1,200
Size:	18s
Jewels:	17j
Movement Configuration:	Openface
Movement Finish:	Gilt
Movement Setting:	Lever
Plate:	Full Plate
Barrel:	Going
Balance Type:	Expansion
Train:	Coarse
Regulator:	Plain
Hairspring:	Flat
Adjusted:	Yes
Adjusted to Position:	No
Adjusted to Temperature:	Yes
Adjusted to Isochronism:	Yes
Railroad Grade:	Yes
Railroad Grade Classification:	Class C
Dial Feet Locations:	1.5, 21.5, 38.0
Case Screw Locations:	23.5, 51.5
Movement Markings:	Stuart. Springfield, Ill. Patent Pinion ["Wheelers Pat.6.22.80" on Movements with Micrometric Regulators]
Case:	Various
Run ID:	82.G3.18S82.183M4.O5.L18.17J2
Database Version:	v52.235
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	3.61
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	12.09
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	0.021%
Registry Population:	3 (3.00%)
Research Note: Meggers/Ehrhardt record run as Grade "Bunn/Stuart." The Bunn movements would be Model 2 with 15 Jewels. #50678: Verified as Model 3 "Stuart" with 17 Jewels (5th Pinion Jewelled).

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Production Metrics Tree: Grade Stuart

Target Profile: 18S-M3-17J-OGL-ATI

Illinois Grade Stuart (All Variations): 3,791 ETP
18S: 3,791 100.00% 18s, Grade Stuart
18S-M3: 1,200 31.65% 18s, Grade Stuart, Model 3	Other: 2,591 Other Models or Unclassified
18S-M3-17J: 1,200 31.65% 18s, Grade Stuart, Model 3, 17 Jewels
18S-M3-17J-OGL: 1,200 31.65% 18s, Grade Stuart, Model 3, 17 Jewels, Openface/Lever/Gilt
18S-M3-17J-OGL-ATI: 1,200 31.65%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
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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.