Pocket Watch Database

From the American Horology Archive:
Waltham Grade No. 1621 Pocket Watch

American Waltham Watch Co.

Grade: No. 1621

Riverside

Manufacturer: Waltham Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 28927897 Question Mark
Grade: No. 1621 Question Mark
Variation: Riverside Question Mark
Model: 1908 Question Mark
Estimated Production Year: 1936 Question Mark
Run Quantity: 1,000 Question Mark
Grade/Model Run: 2 of 22 Question Mark
Grade/Model Total Production: 77,738 Question Mark
Size: 16s Question Mark
Jewels: 21j Question Mark
Jewel Setting: Pressed Raised Cup Settings Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Pendant Question Mark
Plate: Bridge Plate Question Mark
Regulator: Plain Question Mark
Hairspring: Breguet Question Mark
Adjusted: Yes Question Mark
Adjusted to Position: No Question Mark
Adjusted to Temperature: Yes Question Mark
Railroad Grade: No Question Mark
U.S. Patents: 940117 Question Mark
Movement Markings: Waltham, U.S.A.
Riverside
21 Jewels
Adj. Temp.
Case: Various Question Mark
Run ID: 25592.G2.16S3879.161908M1417.O15868.P10518.21J590 Question Mark
Data Research: 1954 Waltham "Gray Book" List
NAWCC Waltham Serial Digest
Question Mark
Database Version: v52.602 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
234.05 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
212.98 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.233% Question Mark
Registry Population:
Scoped for This Run Only
10 (1.00%) Question Mark
$ Estimated Value (12 Month Change): 4.83% Analyzing 458 Sales Question Mark

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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.


Bostonjoe Top Contributor Supporter 211 · February 4, 2025

Serial Number 28927897 was reported as accurate.

Anonymous · August 28, 2022

Serial Number 28927475 was reported as accurate.

Anonymous · January 24, 2019

Serial Number 28927001 was reported as accurate.

Anonymous · January 8, 2019

Serial Number 28927467 was reported as accurate.

Anonymous · May 30, 2018

Serial Number 28927859 was reported as accurate.

Anonymous · January 27, 2018

Serial Number 28927412 was reported as accurate.

Anonymous · April 24, 2016

Serial Number 28927705 was reported as accurate.

Anonymous · January 20, 2016

Serial Number 28927052 was reported as accurate.

Anonymous · September 22, 2015

Serial Number 28927961 was reported as inaccurate.

Note: RIVERSIDE
Changes since this report was submitted:
Plate changed from Unknown to Bridge

Anonymous · September 4, 2013

Serial Number 28927781 was reported as accurate.

Anonymous · July 8, 2013

Serial Number 28927314 was reported as inaccurate.

Note: 1935 Riverside model was a railroad grade, later
versions were not. Picture shown is newer model,
not a 1930's.
Changes since this report was submitted:
Plate changed from Unknown to Bridge

GhostS2 7 · June 17, 2013

Serial Number 28927314 was reported as accurate.

Waltham Grade No. 1621 Pocket Watch