Omega Seamaster Chrono Ref. 145.006

Omega
Seamaster Chrono Ref. 145.006-66
around 1968
Case: Steel, Tonnau-form
black dial with white hours-indexes
red chrono-centrum-hand and
white hands
Movement: red-gold-plated Movement, Cal. 321
Diameter of case: approx. 41mm
black leather-strap, 20mm
Omega-Steel-pin-ending