Pocket Watch Database

From the American Horology Archive:

American Waltham Watch Co.

Grade: Riverside A

Manufacturer: Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 20018354
Grade: Riverside A
Model: Colonial A
Estimated Production Year: 1915
Run Quantity: 1,000
Grade/Model Run: 2 of 25
Grade/Model Total Production: 25,300
Size: 14s
Jewels: 19j
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Pendant
Plate: Bridge Plate
Hairspring: Breguet
Adjusted: Yes
Adjusted to Position: Yes
Railroad Grade: No
Data Research: 1954 Waltham "Gray Book" List
NAWCC Waltham Serial Digest
Case: Various
Run ID: 22856.G2.14S2443.M4.O14191.P8010.19J396
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
75.75
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
69.31
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.076%
Registry Population: 11 (1.10%)
Research Note: Waltham Serial Ledgers designate this run as "Col. A."

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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 · March 5, 2019

Serial Number 20018843 was reported as accurate.

Anonymous · October 5, 2018

Serial Number 20018366 was reported as accurate.

Changes since this report was submitted:
Factory Model changed from Colonial to Colonial A

Anonymous · December 31, 2014

Serial Number 20018254 was reported as accurate.

Changes since this report was submitted:
Factory Model changed from Ser.a to Colonial A

KithAB 25 · December 22, 2014

Serial Number 20018169 was reported as accurate.

Changes since this report was submitted:
Factory Model changed from Ser.a to Colonial A

Anonymous · June 29, 2014

Serial Number 20018049 was reported as inaccurate.

Note: Definitely a Colonial A: My case is marked
"Colonial" and "A". Movement plates and markings
are identical to my other Colonial A (including
"Riverside A") (except NOT marked "Adjusted"), and
very different from all the shown pics here. Also
as thin as my Colonial A.
Changes since this report was submitted:
Size changed from Unknown to 14
Factory Model changed from Ser.a to Colonial A
Plate changed from Unknown to Bridge

Anonymous · April 23, 2014

Serial Number 20018234 was reported as inaccurate.

Note: 19j Riverside A
Changes since this report was submitted:
Jewels changed from 21j to 19j
Factory Model changed from Ser.a to Colonial A
Plate changed from Unknown to Bridge

Anonymous · July 9, 2013

Serial Number 20018805 was reported as inaccurate.

Note: It's 19 jewels, not 21.
Changes since this report was submitted:
Jewels changed from 21j to 19j
Factory Model changed from Ser.a to Colonial A
Plate changed from Unknown to Bridge

Anonymous · June 11, 2013

Serial Number 20018149 was reported as inaccurate.

Note: 19j, Unadjusted
Changes since this report was submitted:
Jewels changed from 21j to 19j
Factory Model changed from Ser.a to Colonial A
Plate changed from Unknown to Bridge