Pocket Watch Database


From the American Horology Archive:
Waltham Grade No. 820 Pocket Watch

American Waltham Watch Co.

Grade: No. 820

Mixed Run: 15-Jewel and 17-Jewel Movements

Manufacturer: Waltham Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 12100129 Question Mark
Grade: No. 820 Question Mark
Model: 1883 Question Mark
Estimated Production Year: 1902 Question Mark
Run Quantity: 1,700 Question Mark
Grade/Model Run: 108 of 224 Question Mark
Grade/Model Total Production: 413,500 Question Mark
Size: 18s Question Mark
Jewels: 15j    Mixed Run Question Mark
Movement Configuration: Hunting Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Lever Question Mark
Plate: Full Plate Question Mark
Hairspring: Breguet Question Mark
Adjusted: No Question Mark
Railroad Grade: No Question Mark
Case: Various Question Mark
Run ID: 18045.G108.18S10907.181883M2512.H5624.L4578.15J4213 Question Mark
Data Research: 1954 Waltham "Gray Book" List
NAWCC Waltham Serial Digest
Question Mark
Database Version: v52.457 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
370.62 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
337.27 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.368% Question Mark
Registry Population:
Scoped for This Run Only
12 (0.71%) Question Mark
$ Estimated Value (12 Month Change): -8.08% Analyzing 1,257 Sales Question Mark
Research Note: Mixed Run: 15-Jewel and 17-Jewel Movements

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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.


PHIL1199 Supporter 1126 · September 14, 2023

Serial Number 12100671 was reported as inaccurate.

Note: 12100671 HAS 15 JEWELS!.
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.
Changes since this report was submitted:
Jewels changed from 17j to 15j

Anonymous · January 16, 2021

Serial Number 12100000 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Jewels changed from 17j to 15j

Anonymous · January 11, 2021

Serial Number 12100540 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 17j to 15j

Anonymous · February 3, 2020

Serial Number 12100587 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 17j to 15j

Anonymous · January 29, 2020

Serial Number 12100587 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 17j to 15j

Anonymous · July 31, 2019

Serial Number 12099989 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 17j to 15j

Anonymous · February 19, 2019

Serial Number 12100101 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 17j to 15j

Anonymous · January 9, 2017

Serial Number 12100480 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 17j to 15j

cmdraven 4083 · July 9, 2016

Serial Number 12100386 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 17j to 15j
Movement Finish changed from Gilt or Nickel to Nickel

tkarter 184 · January 12, 2015

Serial Number 12100167 was reported as inaccurate.

Note: 15 Jewels
Changes since this report was submitted:
Jewels changed from 17j to 15j

Anonymous · November 15, 2014

Serial Number 12101250 was reported as inaccurate.

Note: 12101250 is inscribed 17 jewels

Anonymous · October 24, 2014

Serial Number 12099823 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · August 14, 2014

Serial Number 12099927 was reported as inaccurate.

No further details were submitted with the report.

wmrnwatch 1 · February 20, 2014

Serial Number 12100409 was reported as inaccurate.

Note: Jewels this model I have has 17 imprinted under
the serial number
Waltham Grade No. 820 Pocket Watch