Wow! These are super rare guitars, especially in this condition! This is the Everly Brothers signature model SQ-180 mini Jumbo. Earlier models were not directly affiliated with Everly because of their affiliation with Steinegger guitars. They only did these a couple of years. This one is in near mint shape, practically no fret wear, perfect playing condition, and doesnt have those ridiculous red pickguards of the 1980s.
We just recently set this up with a new set of Daddarios and it has a bright and punchy tone!
No case was included when we bought this from the original owner but we can find a used one for you for around $40, or a new one for about $99.
Cool guitar and a neat little piece of Rock n Roll legacy!