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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/hamilton/527721
https://pocketwatchdatabase.com/search/result/hamilton/527721
Access Date: March 31, 2025
From the American Horology Archive:
Hamilton Watch Co.
Grade: 940
| Manufacturer: | Hamilton |  |
| Manufacturer Location: | Lancaster, Pennsylvania | |
| Movement Serial Number: | 527721 | |
| Grade: | 940 | |
| Model: | 1 | |
| Estimated Production Year: | 1907 | |
| Run Quantity: | 7,000 | |
| Grade/Model Run: | 79 of 121 | |
| Grade/Model Total Production: | 210,596 | |
| Size: | 18s | |
| Jewels: | 21j | |
| Jewel Material: | Ruby | |
| Jewel Setting: | Screw-Set | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Finish Pattern: | Damaskeened | |
| Movement Signing Style: | Serif (Decorative) | |
| Movement Inlay Color: | Gilt | |
| Movement Setting: | Lever | |
| Plate: | Full Plate | |
| Double Roller: | Yes | |
| Barrel: | Going | |
| Regulator: | Micrometer | |
| Hairspring: | Breguet | |
| 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 | |
| Railroad Grade Classification: | Class A | |
| Dial Feet Locations: | 2.6, 18.0, 38.2 | |
| U.S. Patents: | 832672, 427072 | |
| Movement Markings: | Hamilton Watch Co. Lancaster. Pa. 940 21 Jewels Safety Pinion Adjusted |
|
| Case: | Various | |
| Run ID: | 1007.940G79.18S556.181M339.O589.L643.21J265 | |
| Data Research: |
1953 Hamilton Serial List |
|
| Database Version: | v52.631 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 638.19 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 278.20 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 1.977% | |
| Registry Population: Scoped for This Run Only | 82 (1.17%) | |
| $ Estimated Value (12 Month Change): | 0.40% Analyzing 2,425 Sales | |
|
Research Note: Gilt Lettering
|
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Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 82 watches in the population registry for this run with 16 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.
keywind 13 · April 15, 2021
Serial Number 528551 was reported as inaccurate.
Note: All is correct but on mine, the Movement Markings
also has "5 Positions" added under Adjusted.
Apparently that change was made sometime in this
run because I have serial #524262 from one year
prior which only says Adjusted but is also from
the same run according to my Illinois
Identification and Price Guide by Roy Ehrhardt.
also has "5 Positions" added under Adjusted.
Apparently that change was made sometime in this
run because I have serial #524262 from one year
prior which only says Adjusted but is also from
the same run according to my Illinois
Identification and Price Guide by Roy Ehrhardt.
Anonymous · March 9, 2020
Serial Number 528852 was reported as inaccurate.
Note: 23j
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.
slufdriver 60 · September 27, 2019
Serial Number 529759 was reported as inaccurate.
Note: Not a Private Label unit. Also, the majority of
the hardware on the movement is gilded. As
purchased, standard Hamilton dial (Montgomery).
Also, the plate screws, regulator and other small
items gilded.
the hardware on the movement is gilded. As
purchased, standard Hamilton dial (Montgomery).
Also, the plate screws, regulator and other small
items gilded.
Curator Response: Thanks for the report. The private label listing includes labels that have been found in the run. These were typically produced in small batches, and the entire run is not expected to be marked with the same private label.
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