Very cool case, slowro! I'm pretty sure that's not from 1986 though. The cases in 1985, 1986, and most of 1987 were not form-fitted to the body of the guitar and had a trapezoidal compartment (rather than rectangular). It appears as though the case you have is a late '80s PRS case. I've owned both (see pictures below) and the lining on the earlier cases was a brighter blue. Here is a picture of my old '89 VY Custom with a case almost identical to yours (which makes me wonder if they're the same case) and a picture of my old '85 with an early PRS blue-lined case.
For what it's worth, the case you got is much more scarce. I've only owed one and maybe seen 2 others. Congrats!
Bryan is correct The early 80's cases were lighter blue and weren't form-fitting like the later cases.
Thanks for clearing that up guy. I had done some searching about them and turned up little info.
The guy selling claimed it was from Serial Number 6-117x and the original owner had a flight case made and sold it to him at grinning elk music but every cloud has a silver lining if it is more scarce!
I'd love to see the original guitar that came with it!