1977 Greco SA-550
An Expressionist - As Versatile As Possible
You may find pretty exciting to compare this model to 1979 models which is also listed in the main page. Shape of the headstock and Greco brand logo, peg tuners, and change of tail piece reflects how Greco evolved from carbon-copying Gibson to its own design.
The bottom photo of the picture below is photocopy of 1977 catalogue.