Pocket Watch Database
https://pocketwatchdatabase.com/search/result/hamilton/644425
Access Date: January 29, 2023
From the American Horology Archive:
Hamilton Watch Co.
Grade: 940
| Manufacturer: | Hamilton |  |
| Manufacturer Location: | Lancaster, Pennsylvania | |
| Movement Serial Number: | 644425 | |
| Grade: | 940 | |
| Model: | 1 | |
| Estimated Production Year: | 1909 | |
| Run Quantity: | 600 | |
| 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 Inlay Color: | Gilt | |
| Movement Setting: | Lever | |
| Plate: | Full Plate | |
| Double Roller: | Yes | |
| Barrel: | Motor | |
| Regulator: | Goldthwait | |
| 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 | |
| Data Research: |
1953 Hamilton Serial List |
|
| Case: | Various | |
| Registry Population: | 13 (2.17%) | |
| Database Version: | v49.712 | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
| 1 |
Image Credit: netmind |
644425 | #25 | Collection | October 16, 2020 |
| 2 | 644439 | #39 | Marketplace | August 13, 2013 | |
| 3 | 644490 | #90 | Marketplace | October 02, 2021 | |
| 4 | 644532 | #132 | Marketplace | March 10, 2019 | |
| 5 | 644550 | #150 | Marketplace | February 20, 2019 | |
| 6 | 644634 | #234 | Inferred | ||
| 7 | 644665 | #265 | Collection | February 01, 2018 | |
| 8 | 644742 | #342 | Marketplace | June 23, 2018 | |
| 9 | 644773 | #373 | Collection | March 31, 2019 | |
| 10 | 644812 | #412 | Marketplace | February 26, 2015 | |
| 11 | 644937 | #537 | Collection | February 03, 2018 | |
| 12 | 644958 | #558 | Marketplace | December 26, 2019 | |
| 13 | 644979 | #579 | Collection | January 08, 2019 | |
| Standard Deviation of Known Examples: 196.28 (Expected: 173.35, Δ22.93/3.82%) | |||||
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.
Anonymous · February 16, 2021
Serial Number 644566 was reported as accurate.
Anonymous · February 15, 2020
Serial Number 644958 was reported as accurate.
Anonymous · March 31, 2019
Serial Number 644773 was reported as accurate.
Anonymous · December 17, 2018
Serial Number 644779 was reported as accurate.
Anonymous · September 19, 2018
Serial Number 644722 was reported as accurate.
Anonymous · July 24, 2018
Serial Number 644742 was reported as accurate.
Waltham21j 121 · February 3, 2018
Serial Number 644937 was reported as accurate.
Anonymous · November 15, 2017
Serial Number 644425 was reported as accurate.
von1943 361 · September 27, 2017
Serial Number 644425 was reported as accurate.
von1943 361 · September 27, 2017
Serial Number 644425 was reported as accurate.
Anonymous · June 7, 2017
Serial Number 644425 was reported as accurate.
Anonymous · January 30, 2017
Serial Number 644924 was reported as accurate.
Anonymous · October 5, 2016
Serial Number 644411 was reported as accurate.
Anonymous · August 23, 2016
Serial Number 644609 was reported as accurate.
Gimparoo Supporter 703 · February 2, 2014
Serial Number 644924 was reported as accurate.
PGill34 60 · August 22, 2013
Serial Number 644618 was reported as accurate.
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