Stainless steel OMEGA 'bumper' automatic wristwatch. Made 1948

A "bumper" is an early type of automatic movement. Unlike modern automatic movements, where the rotor completes a full 360-degree rotation, the rotor in a bumper moves back and forth in an arc of about 180 degrees, bouncing off springs positioned on opposite sides.

• • Brand: OMEGA 
  • Made: 1948
  • Model: Seamaster
  • Reference: 2374/5
  • Calibre: 30.10.RA.PC
  • Movement: Automatic
  • Material: Stainless Steel
  • Features/complications: Bumper automatic movement
  • Dial: Off-white dial featuring an inner minute track with applied mirror polished arrow hour indices and steel Dauphine hands 
  • Case dimensions: 35 mm
  • Bracelet/strap: Leather strap
  • Accessories: -
  • SKU: 03285