The Vintage Wrist Watch Company has dated this piece to the 1960s.
The watch has a 17-jewel hand-winding movement, calibre 613, which is working nicely. The movement is fully signed and it has the serial number 32,701,208 which dates it back to 1970.
The watch measures 35mm diameter excluding the plain winding crown and the lugs.
The inside of the case back has the Omega logo together with the case reference 136.070 which is correct for the calibre 613.

The lens is in good condition, and it has the tiny clear Omega logo to the centre (there is some natural light reflection showing in the photos).
The signed dial is in its original finish with original hands, centre seconds sweep and date display (initially set by pushing and pulling the crown). There is some marking on the dial.

The watch comes on a generic stainless steel bracelet which currently fits an 18cm wrist although there is capacity on the clasp to make it around 2cm larger. Light marking to the clasp.
The watch comes in an Omega presentation box… it looks as though the hinge has been repaired at some point, the box doesn’t quite close fully.
The Vintage Wrist Watch Company has dated this piece to the 1960s.
Specialists in antique and vintage wrist watches and pocket watches
You can view the stock and full dealer information on the The Vintage Wrist Watch Company Profile Page