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: 1911313
Grade: 920
Model: 1
Estimated Production Year: 1922
Run Quantity: 2,000
Grade/Model Run: 13 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
Double Roller: Yes
Barrel: Jeweled Motor
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: 2137.920G13.12S81.121M81.O1540.P627.23J52
Database Version: v52.245
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: 31 (1.55%)
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.


pinkdrill Supporter 98 · September 24, 2023

Serial Number 1912898 was reported as accurate.

Anonymous · April 7, 2023

Serial Number 1911865 was reported as accurate.

Anonymous · February 21, 2023

Serial Number 1912040 was reported as accurate.

Anonymous · August 22, 2020

Serial Number 1912060 was reported as accurate.

Anonymous · July 16, 2020

Serial Number 1911415 was reported as accurate.

Anonymous · July 15, 2019

Serial Number 1912753 was reported as accurate.

Anonymous · June 2, 2019

Serial Number 1911562 was reported as accurate.

Anonymous · August 28, 2018

Serial Number 1912899 was reported as accurate.

Anonymous · April 3, 2018

Serial Number 1911441 was reported as accurate.

Anonymous · September 15, 2017

Serial Number 1912612 was reported as accurate.

von1943 Supporter 376 · June 11, 2017

Serial Number 1911506 was reported as accurate.

von1943 Supporter 376 · June 11, 2017

Serial Number 1911506 was reported as accurate.

von1943 Supporter 376 · June 11, 2017

Serial Number 1911506 was reported as accurate.

von1943 Supporter 376 · June 8, 2017

Serial Number 1911506 was reported as accurate.

Anonymous · May 20, 2017

Serial Number 1912428 was reported as accurate.

Anonymous · May 11, 2017

Serial Number 1911441 was reported as accurate.

Anonymous · December 21, 2016

Serial Number 1912470 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · December 15, 2016

Serial Number 1912824 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · September 10, 2016

Serial Number 1912826 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · April 26, 2016

Serial Number 1911042 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · March 25, 2016

Serial Number 1912899 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · March 1, 2016

Serial Number 1912753 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · December 16, 2014

Serial Number 1912120 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

jeromeschley 60 · November 3, 2014

Serial Number 1911313 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · April 3, 2014

Serial Number 1911935 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · March 19, 2014

Serial Number 1912246 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · January 6, 2013

Serial Number 1911048 was reported as inaccurate.

Note: Has a 3/4 plate and a jeweled motor barrel
mainspring.

Anonymous · December 31, 2012

Serial Number 1912737 was reported as accurate.

Anonymous · December 15, 2012

Serial Number 1911347 was reported as accurate.

Anonymous · April 19, 2012

Serial Number 1911666 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · April 12, 2012

Serial Number 1912749 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · April 12, 2012

Serial Number 1912749 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · April 12, 2012

Serial Number 1912749 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · April 12, 2012

Serial Number 1912749 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes
Hamilton Grade 920 Pocket Watch