Offered here is an antique size 12 Hamilton grade 920 dating to 1919. This high grade movement with 23 jewels is cased in a 14K heavy gold filled case marked as QUALITY PERMANENT.

Hamilton Watch Co.

Grade: 920

Manufacturer: Hamilton
Manufacturer Location: Lancaster, Pennsylvania
Movement Serial Number: 1831643
Grade: 920
Model: 1
Estimated Production Year: 1919
Run Quantity: 1,000
Grade/Model Run: 5 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