Pocket Watch Database

From the American Horology Archive:
Waltham Grade 8 Day Pocket Watch

American Waltham Watch Co.

Grade: 8 Day

CDIA, Aircraft

Manufacturer: Waltham Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 31493080 Question Mark
Grade: 8 Day Question Mark
Variation: CDIA Question Mark
Model: Air Question Mark
Estimated Production Date: September 1943 - October 1943 Question Mark
Run Quantity: 10,000 Question Mark
Grade/Model Run: 10 of 14 Question Mark
Grade/Model Total Production: 124,000 Question Mark
Size: 37s Question Mark
Jewels: 15j Question Mark
Movement Configuration: Openface Question Mark
Plate: 3/4 Plate Question Mark
Hairspring: Breguet Question Mark
Adjusted: No Question Mark
Railroad Grade: No Question Mark
Case: Various Question Mark
Run ID: 25834.G219.37S234.M10.O16055.U158.15J6103 Question Mark
Data Research: 1954 Waltham "Gray Book" List
NAWCC Waltham Serial Digest
Question Mark
Database Version: v52.470 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
343.23 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
312.33 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.341% Question Mark
Registry Population:
Scoped for This Run Only
1 (0.01%) Question Mark

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.


Ifxtym 27 · December 16, 2023

Serial Number 31493080 was reported as inaccurate.

Note: This is an 8 day aircraft clock with a dial
showing 24 hours (instead of a usual 12 hour
dial), a sweep second hand, and a small sweep
calendar hand. It has 15 jewels and a winding
system attached to allow for winding and setting
via a knob on the front of the case.
Curator Response: Thanks for the additional information!

Anonymous · October 22, 2018

Serial Number 31493918 was reported as inaccurate.

Note: movement marked adjusted Temp. & 1 position
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection so we can take a closer look.
Waltham Grade 8 Day Pocket Watch