The Vintage Wrist Watch Company has dated this piece to the 1960s.
The watch has a calibre 285 hand-winding movement which is working well. The movement is signed Omega and it has the serial number 17,889,248 which dates it back to 1960.

The watch measures 35mm diameter excluding the winding crown and the lugs. The case is stainless steel and it has the raised Seamaster logo to the screw-on case back. Overall the case is in good condition with just some light surface marking to the sides. The winding crown has the Omega logo… there is an indentation to the end of the crown. The case reference is 14390-7-SC which is correct for the calibre 285 movement.

The lens is in good condition.
Dauphine hands, centre second hand and outer minute markers… there is a little marking to the hands.
A new black leather strap has been fitted.
PRICE INCLUDES WORLDWIDE POSTAGE
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