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

Manufacturer: Waltham Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 11742830 Question Mark
Grade: No. 620 Question Mark
Model: 1899 Question Mark
Estimated Production Year: 1902 Question Mark
Run Quantity: 2,500 Question Mark
Grade/Model Run: 74 of 174 Question Mark
Grade/Model Total Production: 339,100 Question Mark
Variant Est. Production: 153,450 (16S-M1899-15J-ONP) Question Mark
Size: 16s Question Mark
Jewels: 15j Question Mark
Jewel Setting: Screw-Set Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Inlay Color: Black Question Mark
Movement Setting: Pendant Question Mark
Plate: Bridge Plate Question Mark
Bridge Type: Center Question Mark
Regulator: Church 1892 Question Mark
Hairspring: Breguet Question Mark
Adjusted: No Question Mark
Railroad Grade: No Question Mark
Movement Markings: A.W.W.Co.
Waltham, Mass.
15 Jewels
Case: Various Question Mark
Run ID: 17772.G74.16S1507.161899M473.O11342.P3828.15J4172 Question Mark
Data Research: 1954 Waltham "Gray Book" List
NAWCC Waltham Serial Digest
Question Mark
Database Version: v52.622 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
462.60 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
420.97 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.460% Question Mark
Registry Population:
Scoped for This Run Only
14 (0.56%) Question Mark
$ Estimated Value (12 Month Change): -8.93% Analyzing 1,590 Sales Question Mark
Research Note: #11741705, #11743082: Reported as 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 · January 3, 2023

Serial Number 11743930 was reported as accurate.

Anonymous · June 27, 2022

Serial Number 11742414 was reported as accurate.

Anonymous · September 25, 2021

Serial Number 11743082 was reported as inaccurate.

Note: plugged plate 17 jewel
Curator Response: Thanks for the report. This information has been noted in the research notes for this run.

Anonymous · August 27, 2021

Serial Number 11742650 was reported as accurate.

Anonymous · November 22, 2020

Serial Number 11743382 was reported as accurate.

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

Anonymous · August 16, 2020

Serial Number 11742279 was reported as accurate.

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

Anonymous · August 9, 2020

Serial Number 11742762 was reported as accurate.

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

Anonymous · July 9, 2020

Serial Number 11742992 was reported as accurate.

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

djh1960 4 · May 22, 2020

Serial Number 11743095 was reported as accurate.

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

Anonymous · September 28, 2019

Serial Number 11742646 was reported as accurate.

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

JLashbrook 110 · December 9, 2018

Serial Number 11742088 was reported as accurate.

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

Anonymous · November 7, 2018

Serial Number 11741633 was reported as accurate.

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

Yohanaqua 10 · July 14, 2018

Serial Number 11743721 was reported as accurate.

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

Anonymous · March 14, 2018

Serial Number 11741705 was reported as inaccurate.

Note: The one I have has been plugged and upjewled to
17j. #11741705. I believe that it is a neat enough
job preformed at Waltham.
Curator Response: Thanks for the report. I have included a research note reguarding your watch.
Changes since this report was submitted:
Plate changed from 3/4 to Bridge

pwdmbj Supporter 563 · August 20, 2015

Serial Number 11743400 was reported as accurate.

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

Anonymous · July 30, 2014

Serial Number 11741696 was reported as accurate.

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