Omega stainless steel vintage Speedmaster Chronograph, automatic, size 42mm x 51mm. Omega reference 378/0801 with a stainless steel case and bracelet, black tachymetre bezel, black tritium dial, date display, chronograph function, mineral glass crystal. Circa 1973. Six months full warranty. 

Maker: Omega
Model: Speedmaster
Reference: 378/0801
Year: Circa 1973
Case Size: 42mm
Crystal: Mineral Glass
Caliber: 1041
Bracelet/Strap: Bracelet
Box/Papers: No

Grade: Very Good
Notes: This model was introduced in 1973 to celebrate the 125th Anniversary of the founding of the brand. Caliber 1041 was only ever used for this anniversary model. It's a Lemania-based chronograph movement that was the first automatic chronograph movement to be officially certified as a chronometer.