The attached link shows a caliber 1110 Omega movement from the Ranfft archive. The listing seems to cast doubt on your comment about the watch being from the 1970s. The model of watch is not one I am familiar with, so I wouldn’t be positive as to whether it is all kosher or not. But it looks real enough to me. With this movement, and probably being from the 1980s, not the 1970s, I suspect this is a Swatch Omega. Can you give us a picture of the information inside the case back?
http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&2&2uswk&Omega_1110
I have also include a link to the Ranfft archive that shows an ETA 2892 movement which I suspect is the base movement for the Omega 1110.
http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&2&2uswk&ETA_2892Click to expand...