Pocket Watch Database

From the American Horology Archive:
Rockford Grade 89 Pocket Watch

Rockford Watch Co.

Grade: 89

Manufacturer: Rockford Question Mark
Manufacturer Location: Rockford, Illinois Question Mark
Movement Serial Number: 436803 Question Mark
Grade: 89 Question Mark
Model: 7 Question Mark
Estimated Production Year: 1894 Question Mark
Run Quantity: 700 Question Mark
Grade/Model Run: 10 of 10 Question Mark
Grade/Model Total Production: 7,300 Question Mark
Size: 18s Question Mark
Jewels: 15j Question Mark
Jewel Setting: Screw-Set Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Gilt Question Mark
Movement Inlay Color: None 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
Standard Dial Type: Single-Sunk Question Mark
Adjusted: Mixed Question Mark
Movement Markings: R.W.Co.
Rockford Ill.
Case: Various Question Mark
Run ID: 494.89G10.18S427.187M95.O107.L357.15J194 Question Mark
Data Research: 1907 Rockford Serial List
Question Mark
Database Version: v52.452 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
21.98 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
224.65 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
1.137% Question Mark
Registry Population:
Scoped for This Run Only
8 (1.14%) Question Mark
Research Note: The last run of Grade 89 movements [436,301-437,000] is designated in Rockford Serial Lists as featuring 11 Jewels. However, this is inconsistent with other 15-Jewel runs and is noted as a continuation of the 11-Jewel count from the previous run, so this is considered to be an error in the factory lists.

#436999: Verified with fine nickel damaskeening and gold jewel settings, inconsistent with the Grade 89 designation reflected in the the Rockford factory serial lists.

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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.


ChrisG Top Contributor Supporter 601 · February 23, 2024

Serial Number 436999 was reported as inaccurate.

Note: Nickel plates - demaskeened - type 6 reg - jewel
count TBD - screw mount settings.

Anonymous · December 11, 2021

Serial Number 436714 was reported as accurate.

Anonymous · February 15, 2018

Serial Number 436391 was reported as inaccurate.

Note: Rockford 17 J Serial No . 436391 Has 17J on Works
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection so we can take a closer look.
Changes since this report was submitted:
Jewels changed from 11j to 15j

Anonymous · July 15, 2016

Serial Number 436865 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j to 15j

Anonymous · June 15, 2015

Serial Number 436822 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j to 15j

Anonymous · May 12, 2015

Serial Number 436742 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j to 15j
Rockford Grade 89 Pocket Watch