Nice find! I make it a point to have a look in the antique stores once in a while. I've gotten, on separate trips, a Pentax S2 Super with several Super-Takumar lenses ($75), a Novoflex 105mm bellows lens ($25), and a Mamiya 50mm f/3.5 macro lens ($25). I've also seen lots of obscure cameras that I have no reason to buy but enjoy seeing, nonetheless.
None of that tops a Nikon SP with a lens, however. I'm jealous!