Rockford Pocket Watch: Serial Number 574066 (Grade 918)

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Rockford 21j Pocket Watch, Grade 918

Check Price Source: eBay.com

Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/rockford/574066/link

Access Date: November 22, 2024

From the American Horology Archive:

Rockford Watch Co.

Grade: 918

Production Inconsistent with Factory Records. See Research Notes.

Manufacturer:	Rockford
Manufacturer Location:	Rockford, Illinois
Movement Serial Number:	574066
Grade:	918
Model:	9
Estimated Production Year:	1901
Run Quantity:	100
Grade/Model Run:	2 of 6
Grade/Model Total Production:	2,900
Size:	18s
Jewels:	21j
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Setting:	Lever
Plate:	Full Plate
Double Roller:	Yes
Adjusted:	Yes
Adjusted # of Positions:	5
Adjusted to Temperature:	Yes
Railroad Grade:	Yes
Case:	Various
Run ID:	798.918G2.18S656.189M61.O281.L640.21J46
Data Research:	1907 Rockford Serial List
Database Version:	v52.452
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	8.73
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	89.23
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	0.452%
Registry Population: Scoped for This Run Only	6 (6.00%)
Research Note: This run [574001-574500] was originally designated as Grade 905 in Rockford Serial Lists. However, observations and reports indicate the run is mixed with Grade 905 and Grade 918 movements. For the purpose of the database, this run has been segmented and reassigned using known observations - 574001-574100: 918; 574101-574300: 905; 574301-574500: 918. According to catalog descriptions, the difference between the grades is the 905 features "extra fine ruby and sapphire jewels" while the 918 features "ruby and sapphire jewels" (omitting the word "extra"). The damaskeening patterns and plate markings are also distinctive between the grades. #574066: Verified as Marked "918." #574443: Reported as Marked "918." #574104: Reported as Grade 905. #574207: Verified as consistent with Grade 905 classification [eBay #332861645930].

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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.