Pocket Watch Database

From the American Horology Archive:
Waltham Grade No. 620 Pocket Watch
Waltham Grade No. 620 Pocket Watch

American Waltham Watch Co.

Grade: No. 620

Mixed Run: 15-Jewel and 17-Jewel Movements

Manufacturer: Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 12228481
Grade: No. 620
Model: 1899
Estimated Production Year: 1903
Run Quantity: 3,000
Grade/Model Run: 85 of 174
Grade/Model Total Production: 339,100
Variant Est. Production: 183,150 (16S-M1899-15J-HNP)
Size: 16s
Jewels: 15j    Mixed Run
Jewel Setting: Screw-Set
Movement Configuration: Hunting
Movement Finish: Nickel
Movement Inlay Color: Black
Movement Setting: Pendant
Plate: Bridge Plate
Bridge Type: Center
Regulator: Micrometric
Hairspring: Breguet
Adjusted: No
Railroad Grade: No
Movement Markings: A.W.W.Co.
Waltham, Mass.
15 Jewels
Data Research: 1954 Waltham "Gray Book" List
NAWCC Waltham Serial Digest
Case: Various
Run ID: 18103.G85.16S1597.161899M560.H5657.P4076.15J4233
Database Version: v52.235
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
558.35
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
508.09
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.555%
Registry Population: 22 (0.73%)
Research Note: Waltham Serial Lists designate this run as featuring 15 jewels. However, #12227428 has been verified as a "plugged" movement upgraded to 17 jewels.

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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.


Anonymous · September 29, 2019

Serial Number 12227428 was reported as inaccurate.

Note: For waltham serial number 12227428, I have 17
jewels engraved on the movement. Also, some
internal parts seem to be reversed from what I see
on the posted images
Curator Response: Thanks for the report and images. The Waltham Serial Lists indicate this run is 15 Jewels. However, your movement is evidence that some or all were upgraded and "plugged" at the factory with the new jewel marking.
Changes since this report was submitted:
Plate changed from 3/4 to Bridge

texnet 684 · April 16, 2019

Serial Number 12227606 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

bsissel 1 · July 17, 2018

Serial Number 12226279 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

texnet 684 · October 30, 2016

Serial Number 12227606 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

texnet 684 · October 30, 2016

Serial Number 12227606 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · January 14, 2016

Serial Number 12227205 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · January 14, 2016

Serial Number 12227205 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Harley505 Supporter 78 · July 31, 2015

Serial Number 12228481 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · February 19, 2015

Serial Number 12227056 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · December 26, 2012

Serial Number 12228049 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · December 26, 2012

Serial Number 12228049 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Plate changed from 3/4 to Bridge
Waltham Grade No. 620 Pocket Watch
Waltham Grade No. 620 Pocket Watch