Pocket Watch Database

From the American Horology Archive:
Hamilton Grade 990 Pocket Watch

Hamilton Watch Co.

Grade: 990

Manufacturer: Hamilton
Manufacturer Location: Lancaster, Pennsylvania
Movement Serial Number: 370037
Grade: 990
Model: 1
Estimated Production Year: 1906
Run Quantity: 100
Total Production: 12,599
Size: 16s
Jewels: 21j
Jewel Material: Ruby & Sapphire
Jewel Setting: Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Lever
Plate: 3/4 Plate
Regulator: Reed
Hairspring: Breguet
Pallet Jewel Material: Sapphire
Standard Dial Type: Double-Sunk
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 5
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: Yes
Dial Feet Locations: 7.6, 21.8, 38.0, 50.5
Hamilton 16s Dial Feet Research
Data Research: 1953 Hamilton Serial List
Case: Various
Registry Population: 5 (5.00%)
Database Version: v49.432

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 370004 #4 Marketplace June 05, 2016
2 370022 #22 Marketplace March 11, 2013
3 370030 #30 Collection July 03, 2020
4 370037 #37 Collection January 09, 2022
5 370094 #94 Marketplace October 28, 2020
Standard Deviation of Known Examples: 33.95 (Expected: 29.01, Δ4.94/4.94%)

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Data Verification Reports

370001
Verification Serial Map
370100

cranemaker Supporter 68 · August 28, 2021

Serial Number 370037 was reported as accurate.

Anonymous · August 1, 2021

Serial Number 370037 was reported as accurate.

Hamilton Grade 990 Pocket Watch