Pocket Watch Database

From the American Horology Archive:
Rockford Grade 86 Pocket Watch

Rockford Watch Co.

Grade: 86

Mixed Run: Adjusted and Unadjusted Movements

Manufacturer: Rockford
Manufacturer Location: Rockford, Illinois
Movement Serial Number: 279672
Grade: 86
Variation: LS/LP
Model: 7
Estimated Production Year: 1888
Run Quantity: 800
Grade/Model Run: 3 of 19
Grade/Model Total Production: 9,550
Variant Est. Production: 2,300 (18S-M7-15J-ONL-U/A-LS/LP)
Size: 18s
Jewels: 15j
Jewel Setting: Screw-Set
Movement Configuration: Openface
Movement Finish: Nickel
Movement Signing Style: Old English
Movement Inlay Color: Black
Movement Setting: Lever
Plate: Full Plate
Regulator: Type 5
Hairspring: Breguet
Escapement Type: Straight-line
Standard Dial Type: Single-Sunk
Adjusted: Mixed
Movement Markings: R.W.Co.
Rockford Ill.
Data Research: 1907 Rockford Serial List
Case: Various
Run ID: 250.86G3.18S248.187M14.O26.L113.15J89
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
28.59
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
293.91
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
1.487%
Registry Population: 10 (1.25%)
Research Note: #279463: Verified as Marked "Adjusted." #279672 and #279450: Verified as not marked as being adjusted.

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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.


MoatsJustin1 top-contributor 4691 · November 7, 2023

Serial Number 279992 was reported as accurate.

okiejohn 379 · June 15, 2020

Serial Number 279450 was reported as accurate.

Radron 109 · May 23, 2020

Serial Number 279773 was reported as accurate.

Anonymous · September 20, 2019

Serial Number 279621 was reported as accurate.

oilseed Supporter 469 · February 7, 2018

Serial Number 279488 was reported as inaccurate.

Note: no 'jewel count' engraved on plates. appears to
be 15 jewels (as noted).

Anonymous · October 7, 2015

Serial Number 279568 was reported as accurate.

Anonymous · December 24, 2014

Serial Number 279756 was reported as accurate.

Anonymous · September 27, 2014

Serial Number 279984 was reported as accurate.

Anonymous · September 14, 2014

Serial Number 279984 was reported as accurate.

Flyskippy1 29 · February 2, 2014

Serial Number 279328 was reported as accurate.

hoopibabs 42 · December 2, 2013

Serial Number 279911 was reported as accurate.

Anonymous · May 7, 2013

Serial Number 279393 was reported as inaccurate.

Note: This is a grade 87 movement with the regulator
rotated clockwise 150 deg. and hairspring stud
located in an
area between the balance je
wel and the balance screw. There is a screw
adjustment on the regulator.
from acticle on NAWCC site:

http://www.nawcc-ch149.com/db_resch/Rockford%20Re
view.pdf

page 7 and 8.
Rockford Grade 86 Pocket Watch