Pocket Watch Database

From the American Horology Archive:
Hamilton Grade 920 Pocket Watch

Hamilton Watch Co.

Grade: 920

Manufacturer: Hamilton
Manufacturer Location: Lancaster, Pennsylvania
Movement Serial Number: 1779240
Grade: 920
Model: 1
Estimated Production Year: 1916
Run Quantity: 1,000
Grade/Model Run: 3 of 15
Grade/Model Total Production: 14,600
Size: 12s
Jewels: 23j
Jewel Material: Ruby or Ruby & Sapphire
Jewel Setting: Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Pendant
Plate: Bridge Plate
Balance Type: Compensation
Train Material: Gold
Center Wheel Material: Gold
Regulator: Reed
Hairspring: Breguet
Pallet Jewel Material: Sapphire
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 5
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: No
Dial Feet Locations: 10.5, 38.5, 56.0
Data Research: 1953 Hamilton Serial List
Case: Various
Run ID: 2065.920G3.12S9.121M9.O1468.P555.23J42
Database Version: v52.235
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
43.95
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
19.28
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.137%
Registry Population: 12 (1.20%)
$ Estimated Value (12 Month Change): -8.87% Analyzing 71 Sales
Research Note:

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.


Anonymous · March 15, 2024

Serial Number 1779543 was reported as accurate.

Anonymous · January 22, 2022

Serial Number 1779333 was reported as accurate.

Anonymous · August 22, 2021

Serial Number 1779778 was reported as accurate.

Anonymous · February 28, 2020

Serial Number 1779421 was reported as accurate.

Anonymous · August 6, 2017

Serial Number 1779618 was reported as accurate.

zender05472 3 · November 13, 2015

Serial Number 1779998 was reported as accurate.

Anonymous · September 16, 2015

Serial Number 1779998 was reported as accurate.

Anonymous · December 6, 2014

Serial Number 1779729 was reported as accurate.

philsan1a 221 · November 26, 2014

Serial Number 1779729 was reported as accurate.

Anonymous · June 17, 2014

Serial Number 1779251 was reported as accurate.

Anonymous · September 16, 2013

Serial Number 1779240 was reported as accurate.

Anonymous · July 21, 2013

Serial Number 1779739 was reported as accurate.

Anonymous · June 1, 2013

Serial Number 1779961 was reported as accurate.

Anonymous · October 24, 2012

Serial Number 1779504 was reported as inaccurate.

Note: Hi, This Grade also had a Motor Barrel
Mainspring.. You have a great web site.....
Changes since this report was submitted:
Plate changed from Unknown to Bridge

Anonymous · May 9, 2012

Serial Number 1779244 was reported as accurate.

Anonymous · May 5, 2012

Serial Number 1779244 was reported as accurate.

Hamilton Grade 920 Pocket Watch