This is a nice Constellation Automatic Officially Certified Chronometer in near mint condition. Stainless steel screw back case with observatory logo on back. The excellent original dial is in great condition! The watch features an original factory plastic crystal and original winding crown, both with the Omega logo. The watch is fully signed on the inside of the case and on the movement. The movement itself is a real gem – a pink colored 24 jewel cal 564 adjusted to five positions and temperature! The serial number indicates that this watch was made in 1971. Watch is fitted with a leather bracelet and has an original Omega buckle. measures 42 x 34 mm not including crown.