Pocket Watch Database

From the American Horology Archive:

American Waltham Watch Co.

Grade: Martyn Square

Manufacturer: Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 848838
Grade: Martyn Square
Model: 1874
Estimated Production Date: November 1875 - December 1875
Run Quantity: 100
Grade/Model Run: 3 of 3
Grade/Model Total Production: 200
Size: 12s
Jewels: 11j
Movement Configuration: Adaptable
Movement Finish: Gilt
Movement Setting: Key
Plate: 3/4 Plate
Adjusted: No
Railroad Grade: No
Data Research: c.1900 Waltham Factory Ledger Book 1 [NAWCC]
c.1900 Waltham Factory Ledgers [Ehrhardt Transcription]
1954 Waltham "Gray Book" List
NAWCC Waltham Serial Digest
Case: Various
Run ID: 5929.G35.12S10.121874M3.O5768.K5768.11J3494
Database Version: v52.235
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
0.60
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.55
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.001%
Registry Population: 3 (3.00%)

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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 · June 12, 2020

Serial Number 848838 was reported as inaccurate.

Note: I believe the model designation is incorrect. It
is not 1870-12 (meaning 12-size based on the 1870
model 14-size). This 12-size KW movement is
based on the 10-size 1874 model. Otherwise it
appears to be correct.
Curator Response: Thanks, Jerry. These models have been refined and updated accordingly.
Changes since this report was submitted:
Factory Model changed from 1870-12 to 1874
Adjusted changed from Yes to No

JerryT Waltham Expert Small Watch Expert 425 · January 20, 2020

Serial Number 848838 was reported as accurate.

Changes since this report was submitted:
Factory Model changed from 1870-12 to 1874
Adjusted changed from Yes to No

Anonymous · August 22, 2015

Serial Number 848854 was reported as accurate.

Changes since this report was submitted:
Size changed from 18 to 12
Factory Model changed from 1870-12 to 1874
Adjusted changed from Yes to No

Anonymous · January 30, 2014

Serial Number 848854 was reported as accurate.

Changes since this report was submitted:
Size changed from 18 to 12
Factory Model changed from 1870-12 to 1874
Adjusted changed from Yes to No