The Vintage Wrist Watch Company has dated this piece to the 1960s.
The watch has a 17-jewel calibre 269 hand-winding movement which is working nicely. The movement is signed with the Omega name and the serial number 20,212,045 dates it back to 1963.
The watch measures 35mm diameter excluding the winding crown and the lugs. The case is stainless steel, it has the odd mark to the main body but nothing too detrimental. The screw-on case back has quite a few little marks, possibly from an earlier strap.
003-62... this is correct for the Seamaster 30 with 269 calibre, and it confirms the date of manufacture.

The winding crown has the Omega logo.
The signed dial has been professionally re-finished to a high standard, and it looks great. Original hands, a subsidiary seconds dial and outer minute markers.
A new leather strap has been fitted.
The watch comes in a new presentation box.
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