Pocket Watch Database

From the American Horology Archive:
Rockford Grade 640 Pocket Watch

Rockford Watch Co.

Grade: 640

Gilt Trim

Manufacturer: Rockford
Manufacturer Location: Rockford, Illinois
Movement Serial Number: 841352
Grade: 640
Model: 3
Estimated Production Year: 1910
Run Quantity: 1,000
Grade/Model Run: 2 of 2
Grade/Model Total Production: 2,000
Size: 16s
Jewels: 21j
Movement Configuration: Hunting
Movement Finish: Nickel
Finish Pattern: Pinwheel
Movement Setting: Pendant
Plate: 3/4 Plate
Regulator: Reed
Standard Dial Type: Double-Sunk
Adjusted: Yes
Adjusted to Position: No
Adjusted to Temperature: Yes
Railroad Grade: No
Movement Markings: Rockford Watch Co.
U.S.A.
21 Jewels
Adjusted
Heat & Cold
Data Research: 1907 Rockford Serial List
Case: Various
Run ID: 1219.640G2.16S319.163M78.H581.P249.21J118
Database Version: v52.235
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
6.02
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
61.53
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.311%
Registry Population: 10 (1.00%)

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

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 8, 2023

Serial Number 841184 was reported as accurate.

siantpeter Supporter 26 · October 19, 2022

Serial Number 841084 was reported as inaccurate.

Note: 21J Rockford are all railway grade not approved
but railway grade , the watch is adjusted to 5
positions
Curator Response: Thanks for the report. However, a pendant-set watch would not have been accepted on the majority of railroads at the time of production. The distinction between "Railroad Grade" and "Railroad Approved" is a modern fabrication by collectors. These terms were synonymous in original publications.

Anonymous · June 10, 2021

Serial Number 841312 was reported as accurate.

Anonymous · August 22, 2020

Serial Number 841228 was reported as accurate.

Anonymous · September 1, 2019

Serial Number 841023 was reported as accurate.

Anonymous · July 19, 2019

Serial Number 841172 was reported as accurate.

Anonymous · April 1, 2019

Serial Number 841071 was reported as accurate.

Brycef 107 · January 23, 2018

Serial Number 841352 was reported as accurate.

Anonymous · April 19, 2014

Serial Number 841432 was reported as accurate.

PGill34 60 · August 17, 2013

Serial Number 841032 was reported as accurate.

PGill34 60 · August 17, 2013

Serial Number 841032 was reported as accurate.

Rockford Grade 640 Pocket Watch