All I can tell you is I purchased it in June of 1979 .It was probably ordered a couple of months earlier(so it might have been a 78), and delivered to King James Music in Brooklyn.
Jetglo,it had a Badass II bridge installed by Ken Smith and a brass nut. There are definitely some identifiable marking which if I saw, I would recognize.
I traded it in during the mid 80s at Norms Music in Brooklyn for a 75 P Bass (that receipt I actually have).
Nothing else to go on
