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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/rockford/417681
Access Date: December 30, 2024
From the American Horology Archive:
Rockford Grade 83 Pocket Watch
Rockford Watch Co.

Grade: 83

Private Label(s) in Run:

T. H. Gill - Marengo, Ill.

What is a Private Label?
Manufacturer: Rockford Question Mark
Manufacturer Location: Rockford, Illinois Question Mark
Movement Serial Number: 417681 Question Mark
Grade: 83 Question Mark
Model: 8 Question Mark
Estimated Production Year: 1893 Question Mark
Run Quantity: 500 Question Mark
Grade/Model Run: 25 of 32 Question Mark
Grade/Model Total Production: 21,100 Question Mark
Variant Est. Production: 500 (18S-M8-17J) Question Mark
Size: 18s Question Mark
Jewels: 17j Question Mark
Jewel Setting: Screw-Set Question Mark
Movement Configuration: Hunting Question Mark
Movement Finish: Nickel Question Mark
Movement Inlay Color: Black Question Mark
Movement Setting: Lever Question Mark
Plate: Full Plate Question Mark
Regulator: Type 6 Question Mark
Hairspring: Breguet Question Mark
Escapement Type: Straight-line Question Mark
Adjusted: Mixed Question Mark
Movement Markings: R.W.Co.
Rockford Ill.
Case: Various Question Mark
Run ID: 457.83G25.18S393.188M107.H250.L320.17J14 Question Mark
Data Research: 1907 Rockford Serial List
 Question Mark
Database Version: v52.529 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 63.52 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration		 649.40 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration		 3.286% Question Mark
Registry Population:
Scoped for This Run Only		5 (1.00%) Question Mark
Research Note: Rockford Serial Lists designate this run as featuring 17 Jewels instead of 15 like other Grade 83 runs. #417681: Verified as Marked "17 J" with features more consistent with the Grade 82. #417515: Verified as Private Label Marked "T. H. Gill - Marengo, Ill." with 17 Jewels.
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Production Metrics Tree: Grade 83

Target Profile: 18S-M8-17J-HNL-U/A

Rockford Grade 83 (All Variations): 21,100 ETP
18S: 21,100 100.00%
18s, Grade 83
18S-M8: 21,100 100.00%
18s, Grade 83, Model 8
18S-M8-17J: 500 2.37%
18s, Grade 83, Model 8, 17 Jewels		 Other: 20,600
Other Jewels or Unclassified
18S-M8-17J-HNL: 500 2.37%
18s, Grade 83, Model 8, 17 Jewels, Hunting/Lever/Nickel
18S-M8-17J-HNL-U/A: 500 2.37%

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
There are 5 watches in the population registry for this run with 2 images.
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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.

Radron 109 · December 5, 2019

Serial Number 417515 was reported as inaccurate.

Note: This unit is a private label marked "T. H. Gill,
Marengo, Ill." on both the SS dial and the 17J
movement. Jewels verified. Unique checkerboard
pattern. See collection.
Changes since this report was submitted:
Jewels changed from 15j to 17j

Radron 109 · October 28, 2019

Serial Number 417681 was reported as inaccurate.

Note: Marked 17J, verified accurate. Also marked
adjusted. See collection. The description of a
model 82 fits this movement better than that of a
model 83.
Changes since this report was submitted:
Jewels changed from 15j to 17j

Anonymous · November 29, 2017

Serial Number 417684 was reported as accurate.

Rockford Grade 83 Pocket Watch