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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/waltham/9503626
Access Date: January 20, 2025
From the American Horology Archive:
Waltham Grade Bridge Pocket Watch
American Waltham Watch Co.

Grade: Bridge

Mixed Run: 21-Jewel and 23-Jewel

Manufacturer: Waltham Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 9503626 Question Mark
Grade: Bridge Question Mark
Model: 1899 Question Mark
Estimated Production Year: 1900 Question Mark
Run Quantity: 150 Question Mark
Grade/Model Run: 2 of 15 Question Mark
Grade/Model Total Production: 3,660 Question Mark
Size: 16s Question Mark
Jewels: 21j    Mixed Run Question Mark
Movement Configuration: Hunting Question Mark
Movement Finish: Nickel Question Mark
Movement Signing Style: Formal Script Question Mark
Movement Inlay Color: Black Question Mark
Movement Setting: Pendant Question Mark
Plate: Bridge Plate Question Mark
Bridge Type: Center Question Mark
Regulator: Church 1892 Question Mark
Hairspring: Breguet Question Mark
Adjusted: Yes Question Mark
Adjusted to Position: Yes Question Mark
Movement Markings: American
Watch Co.
Waltham, Mass.
21 Jewels
Safety Barrel
Case: Various Question Mark
Run ID: 16453.G5.16S1089.161899M85.H4876.P2795.21J103 Question Mark
Data Research: 1954 Waltham "Gray Book" List
NAWCC Waltham Serial Digest
 Question Mark
Database Version: v52.563 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 6.20 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration		 5.64 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration		 0.006% Question Mark
Registry Population:
Scoped for This Run Only		4 (2.67%) Question Mark
Research Note: #9503551: Reported with 21 Jewels [JT].
#9503554: Reported with 21 Jewels [JT].
#9503677: Verified as Marked "21 Jewels." Bridge Model. [NAWCC]
#9503687: Reported with 21 Jewels [JT].
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Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
There are 4 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.

Kennethwalker 1 · September 21, 2023

Serial Number 9503592 was reported as accurate.

JerryT Waltham Expert Small Watch Expert 425 · January 31, 2022

Serial Number 9503687 was reported as inaccurate.

Note: This movement has been reported with 23 jewels.
Curator Response: Thanks for the report. This information has been noted in the research notes for this run.

JerryT Waltham Expert Small Watch Expert 425 · January 31, 2022

Serial Number 9503677 was reported as accurate.

JerryT Waltham Expert Small Watch Expert 425 · January 31, 2022

Serial Number 9503666 was reported as accurate.

JerryT Waltham Expert Small Watch Expert 425 · January 31, 2022

Serial Number 9503664 was reported as accurate.

JerryT Waltham Expert Small Watch Expert 425 · January 31, 2022

Serial Number 9503635 was reported as accurate.

JerryT Waltham Expert Small Watch Expert 425 · January 31, 2022

Serial Number 9503632 was reported as accurate.

JerryT Waltham Expert Small Watch Expert 425 · January 31, 2022

Serial Number 9503630 was reported as accurate.

JerryT Waltham Expert Small Watch Expert 425 · January 31, 2022

Serial Number 9503627 was reported as accurate.

JerryT Waltham Expert Small Watch Expert 425 · January 31, 2022

Serial Number 9503554 was reported as inaccurate.

Note: This movement has been reported with 23 jewels.
Curator Response: Thanks for the report. This information has been noted in the research notes for this run.

JerryT Waltham Expert Small Watch Expert 425 · January 31, 2022

Serial Number 9503551 was reported as inaccurate.

Note: This movement has been reported with 23 jewels.
Curator Response: Thanks for the report. This information has been noted in the research notes for this run.

Anonymous · November 2, 2021

Serial Number 9503626 was reported as accurate.

Anonymous · April 25, 2018

Serial Number 9503610 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 23j to 21j

jacobwalls07 143 · September 18, 2017

Serial Number 9503664 was reported as inaccurate.

Note: Mine is 21 jewel and marked 21 jewel still an
American grade model 72 and bridge plate but is
marked 21 jewel
Changes since this report was submitted:
Jewels changed from 23j to 21j

Anonymous · February 25, 2016

Serial Number 9503610 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 23j to 21j
Waltham Grade Bridge Pocket Watch