Rockford Pocket Watch: Serial Number 539424 (Grade 910)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/rockford/539424

Access Date: April 14, 2025

From the American Horology Archive:

Rockford Watch Co.

Grade: 910

Some Marked "King Edward"

Manufacturer:	Rockford
Manufacturer Location:	Rockford, Illinois
Movement Serial Number:	539424
Grade:	910
Model:	9
Estimated Production Year:	1899
Run Quantity:	1,000
Grade/Model Run:	6 of 7
Grade/Model Total Production:	5,200
Size:	18s
Jewels:	21j
Jewel Material:	Ruby & Sapphire
Jewel Setting:	Screw-Set
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Signing Style:	Block Letter
Movement Inlay Color:	Gilt
Movement Setting:	Lever
Plate:	Full Plate
Train:	Quick
Regulator:	Reed
Hairspring:	Breguet
Escapement Type:	Straight-line
Standard Dial Type:	Double-Sunk
Adjusted:	Yes
Adjusted to Position:	Yes
Adjusted # of Positions:	5
Adjusted to Temperature:	Yes
Adjusted to Isochronism:	Yes
Railroad Grade:	Yes
Movement Markings:	Rockford Watch Co. 21 Jewels Adjusted R.G.
Case:	Various
Run ID:	703.910G9.18S636.189M49.O236.L565.21J18
Data Research:	1907 Rockford Serial List
Database Version:	v52.636
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	15.76
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	160.02
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	0.809%
Registry Population: Scoped for This Run Only	30 (3.00%)
$ Estimated Value (12 Month Change):	3.33% Analyzing 60 Sales

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Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
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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 619 · June 2, 2024

Serial Number 540292 was reported as inaccurate.

Note: Post #4 Marked King Edward.
https://mb.nawcc.org/threads/king-edward-plymouth-
watch-co-by-rockford.104032/

Anonymous · September 30, 2023

Serial Number 539992 was reported as accurate.

Anonymous · July 15, 2023

Serial Number 540330 was reported as inaccurate.

Note: Movement Marked King Edward. Has rare factory
non-marked multi-colored fancy dial and hands
instead of traditional double-sunk dial.

Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.