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Movement Specs Production Pop. Registry 13 Value Parts Ad Archive 1 For Sale Sell Your Watch Save to My Collection Print Page Find a Mainspring Find a Balance Staff
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Auction image
Rockford RARE private label I. ZELLER. IDAHO SPRINGS, COLO. 15J two-tone (1890)
$
Check Price Source: eBay.com
Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/rockford/375797
Access Date: May 13, 2025
From the American Horology Archive:
Rockford Grade 87 Pocket Watch
Rockford Watch Co.

Grade: 87

Manufacturer: Rockford Question Mark
Manufacturer Location: Rockford, Illinois Question Mark
Movement Serial Number: 375797 Question Mark
Grade: 87 Question Mark
Variation: LP Question Mark
Model: 7 Question Mark
Estimated Production Year: 1891 Question Mark
Run Quantity: 1,000 Question Mark
Grade/Model Run: 8 of 8 Question Mark
Grade/Model Total Production: 5,500 Question Mark
Size: 18s Question Mark
Jewels: 15j Question Mark
Jewel Setting: Screw-Set Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Two-Tone Question Mark
Movement Setting: Lever Question Mark
Wind Mechanism: Stem 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: Double-Sunk Question Mark
Adjusted: Yes Question Mark
Movement Markings: R.W.Co.
Rockford Ill.
Adjusted
Case: Various Question Mark
Run ID: 374.87G8.18S350.187M60.O72.L237.15J154 Question Mark
Data Research: 1907 Rockford Serial List
 Question Mark
Database Version: v52.646 Question Mark
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Registry Population:
Scoped for This Run Only		13 (1.30%) Question Mark
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Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
There are 13 watches in the population registry for this run with 4 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.

Anonymous · April 3, 2019

Serial Number 375704 was reported as accurate.

Anonymous · February 10, 2019

Serial Number 375268 was reported as accurate.

Anonymous · December 29, 2018

Serial Number 375126 was reported as accurate.

Anonymous · July 22, 2018

Serial Number 375123 was reported as accurate.

Anonymous · April 12, 2017

Serial Number 375857 was reported as accurate.

Kevin H 84 · February 5, 2017

Serial Number 375797 was reported as accurate.

Anonymous · January 16, 2016

Serial Number 375375 was reported as inaccurate.

Note: Tu-Tone Nickel & Gold
Changes since this report was submitted:
Movement Finish changed from Nickel to Two-Tone

Anonymous · June 9, 2015

Serial Number 375347 was reported as accurate.

Changes since this report was submitted:
Movement Finish changed from Nickel to Two-Tone

Anonymous · September 1, 2014

Serial Number 375315 was reported as accurate.

Changes since this report was submitted:
Movement Finish changed from Nickel to Two-Tone

Anonymous · September 1, 2014

Serial Number 375315 was reported as accurate.

Changes since this report was submitted:
Movement Finish changed from Nickel to Two-Tone

Anonymous · April 14, 2014

Serial Number 375074 was reported as inaccurate.

Note: Micrometric adjuster for this serial number is
located on the balance arm, not on the plate.

Marked Adjusted

Can be either lever or pendant set by turning a
set screw.
Changes since this report was submitted:
Movement Finish changed from Nickel to Two-Tone

catdanc 27 · October 8, 2013

Serial Number 375486 was reported as accurate.

Changes since this report was submitted:
Movement Finish changed from Nickel to Two-Tone

Anonymous · April 8, 2013

Serial Number 375921 was reported as inaccurate.

Note: Marked as "adjusted"
Changes since this report was submitted:
Movement Finish changed from Nickel to Two-Tone

Anonymous · April 7, 2013

Serial Number 375921 was reported as accurate.

Changes since this report was submitted:
Movement Finish changed from Nickel to Two-Tone
Rockford Grade 87 Pocket Watch