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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/elgin/10421940
Access Date: May 19, 2025
From the American Horology Archive:
Elgin Grade 148 Pocket Watch
Elgin National Watch Co.

Grade: 148

Elgin Nat'l. Watch Co.

Manufacturer: Elgin Question Mark
Manufacturer Location: Elgin, Illinois Question Mark
Movement Serial Number: 10421940 Question Mark
Grade: 148 Question Mark
Variation: Elgin Nat'l. Watch Co. Question Mark
Model: 5 Question Mark
Class: 9 Question Mark
Estimated Production Year: 1906 Question Mark
Run Quantity: 75 Question Mark
Grade/Model Run: 23 of 34 Question Mark
Grade/Model Total Production: 33,885 Question Mark
Variant Est. Production: 3,075 (18S-M5-17J-ONP-AT-ELGIN NAT'L. WATCH CO.) Question Mark
Size: 18s Question Mark
Jewels: 17j Question Mark
Jewel Setting: Gilded Settings (Screw-Set) Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Pendant Question Mark
Wind Mechanism: Pendant Question Mark
Plate: Full Plate Question Mark
Barrel: Going Question Mark
Train: Quick Question Mark
Regulator: Moseley Question Mark
Hairspring: Breguet Question Mark
Escapement Type: Straight-line Question Mark
Standard Dial Type: Single-Sunk Question Mark
Adjusted: Yes Question Mark
Adjusted to Temperature: Yes Question Mark
Railroad Grade: No Question Mark
U.S. Patents: 77078, 347272, 345619 Question Mark
Case: Various Question Mark
Run ID: 4316.148G23.18S2139.185M739.O1266.P2212.17J415 Question Mark
Data Research: 1904 Elgin Serial List
1915 Elgin Serial List
1927/1950 Elgin Serial List
 Question Mark
Database Version: v52.648 Question Mark
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Registry Population:
Scoped for This Run Only		3 (4.00%) Question Mark
$ Estimated Value (12 Month Change): -6.61% Analyzing 135 Sales Question Mark
Research Note: Elgin Material Catalog Serial Lists designate 10,421,001-10,422,000 as Grade 148 with an appended note stating 10,421,901-10,421,925 were converted to Grade 283. #10421999: Verified as marked "Elgin Nat'l. Watch Co." instead of "G.M. Wheeler."
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Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
There are 3 watches in the population registry for this run with 2 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.

JPFour 8 · June 27, 2021

Serial Number 10421999 was reported as inaccurate.

Note: Maybe, it is not marked G. M. Wheeler. All other
data seems correct. Would be 1st from last 148
Grade made.
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.
Elgin Grade 148 Pocket Watch