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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/waltham/18039542/link
https://pocketwatchdatabase.com/search/result/waltham/18039542/link
Access Date: February 01, 2025
From the American Horology Archive:
American Waltham Watch Co.
Grade: Maximus A
Mixed Run: Riverside 19-Jewel and Maximus 21-Jewel Movements
| Manufacturer: | Waltham |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 18039542 | |
| Grade: | Maximus A | |
| Model: | Colonial A | |
| Estimated Production Year: | 1910 | |
| Run Quantity: | 500 | |
| Grade/Model Run: | 1 of 7 | |
| Grade/Model Total Production: | 2,300 | |
| Size: | 14s | |
| Jewels: | 21j Mixed Run | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Movement Setting: | Pendant | |
| Plate: | Bridge Plate | |
| Hairspring: | Breguet | |
| Adjusted: | Yes | |
| Adjusted to Position: | Yes | |
| Railroad Grade: | No | |
| Case: | Various | |
| Run ID: | 21656.G1.14S2378.M1.O13459.P6935.21J393 | |
| Data Research: |
1954 Waltham "Gray Book" List NAWCC Waltham Serial Digest |
|
| Database Version: | v52.587 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 6.92 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 6.30 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 0.007% | |
| Registry Population: Scoped for This Run Only | 5 (1.00%) | |
|
Research Note: Waltham Serial Lists designate this run as "Maximus Riverside" with "21-19" Jewels, Model "Col. A."
#18039630: Expert-Verified as 21-Jewels (Maximus). #18039635: Reported as 21-Jewels. #18039645: Expert-Verified as 21-Jewels (Maximus). #18039698: Reported as 21-Jewels (Maximus). #18039900: Verified as 19-Jewels, Marked "Riverside A." #18039995: Reported as 19-Jewels (Riverside A). |
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Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 5 watches in the population registry for this run with 1 image.
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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.
JerryT Waltham Expert Small Watch Expert 425 · September 25, 2021
Serial Number 18039645 was reported as inaccurate.
Note: 18039645 is a Maximus with 21 jewels (not 19j)
Curator Response: Thanks for the report. This information has been noted in the research notes for this run.
Changes since this report was submitted:
Jewels changed from 19j to 21j
JerryT Waltham Expert Small Watch Expert 425 · September 25, 2021
Serial Number 18039630 was reported as inaccurate.
Note: 18039630 is a Maximus with 21 jewels (not 19j).
Curator Response: Thanks for the report. This information has been noted in the research notes for this run.
Changes since this report was submitted:
Jewels changed from 19j to 21j
backwardglance1 99 · January 29, 2020
Serial Number 18039994 was reported as accurate.
Changes since this report was submitted:
Jewels changed from 19j to 21j
Anonymous · December 29, 2019
Serial Number 18039987 was reported as accurate.
Changes since this report was submitted:
Jewels changed from 19j to 21j
UMainePhotog 3 · February 13, 2019
Serial Number 18039635 was reported as inaccurate.
Note: This is listed on Ebay and clearly shows 21J
Curator Response: Thanks for the report. If possible, please provide the item number or auction page URL for further evaluation.
Changes since this report was submitted:
Jewels changed from 19j to 21j
Anonymous · January 14, 2017
Serial Number 18039514 was reported as accurate.
Changes since this report was submitted:
Jewels changed from 19j to 21j
Factory Model changed from Ser.a to Colonial A
sanjosetom 313 · February 24, 2016
Serial Number 18039995 was reported as inaccurate.
Note: Riverside A, open, bridge, 19j
Changes since this report was submitted:
Jewels changed from 19j to 21j
Factory Model changed from Ser.a to Colonial A
Plate changed from Unknown to Bridge
docbrown 3 · February 21, 2014
Serial Number 18039900 was reported as inaccurate.
Note: This watch is engraved Riverside A
Changes since this report was submitted:
Jewels changed from 19j to 21j
Factory Model changed from Ser.a to Colonial A
Plate changed from Unknown to Bridge
Anonymous · September 27, 2013
Serial Number 18039719 was reported as accurate.
Changes since this report was submitted:
Jewels changed from 19j to 21j
Factory Model changed from Ser.a to Colonial A
rcfrueh 7 · July 11, 2013
Serial Number 18039698 was reported as inaccurate.
Note: 21 Jewel maximus 12s
Changes since this report was submitted:
Jewels changed from 19j to 21j
Factory Model changed from Ser.a to Colonial A
Plate changed from Unknown to Bridge
