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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/rockford/439558
Access Date: March 04, 2025
From the American Horology Archive:
Rockford Grade 82a Pocket Watch
Rockford Watch Co.

Grade: 82a

Private Label(s) in Run:

Wathier Special Railway Chonometer
Wilbur Lamphear & Tryner - Galesburg, Ill.
Wade's Special

What is a Private Label?
Manufacturer: Rockford Question Mark
Manufacturer Location: Rockford, Illinois Question Mark
Movement Serial Number: 439558 Question Mark
Grade: 82a Question Mark
Model: 8 Question Mark
Estimated Production Year: 1894 Question Mark
Run Quantity: 100 Question Mark
Grade/Model Run: 2 of 3 Question Mark
Grade/Model Total Production: 440 Question Mark
Variant Est. Production: 140 (18S-M8-17J-HNL) Question Mark
Size: 18s Question Mark
Jewels: 17j Question Mark
Movement Configuration: Hunting Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Lever Question Mark
Plate: Full Plate Question Mark
Regulator: Micrometric Question Mark
Hairspring: Breguet Question Mark
Escapement Type: Straight-line Question Mark
Adjusted: Yes Question Mark
Case: Various Question Mark
Run ID: 503.G2.18S436.188M133.H280.L366.17J27 Question Mark
Data Research: 1907 Rockford Serial List
 Question Mark
Database Version: v52.618 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 1.32 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration		 13.51 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration		 0.068% Question Mark
Registry Population:
Scoped for This Run Only		6 (6.00%) Question Mark
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Production Metrics Tree: Grade 82a

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

Rockford Grade 82a (All Variations): 440 ETP
18S: 440 100.00%
18s, Grade 82a
18S-M8: 440 100.00%
18s, Grade 82a, Model 8
18S-M8-17J: 440 100.00%
18s, Grade 82a, Model 8, 17 Jewels
18S-M8-17J-HNL: 140 31.82%
18s, Grade 82a, Model 8, 17 Jewels, Hunting/Lever/Nickel 		Other: 300
Other Configs or Unclassified
18S-M8-17J-HNL-A: 140 31.82%

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
There are 6 watches in the population registry for this run with 5 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.

okiejohn 404 · February 7, 2025

Serial Number 439650 was reported as inaccurate.

Note: This movement is a two-tone also.

okiejohn 404 · February 7, 2025

Serial Number 439650 was reported as inaccurate.

Note: Movement is a private label, "J. & H. Ostendorf."
Otherwise correct.
(sorry for the typo previous post!)

okiejohn 404 · February 7, 2025

Serial Number 439650 was reported as inaccurate.

Note: Movement is a private label, "J. & H. Ostenforf."
Otherwise correct.

Rickglick1 Top Contributor Supporter 18 · February 20, 2022

Serial Number 439626 was reported as accurate.

Rockford Grade 82a Pocket Watch