Want to Buy WTB: Mamiya Six (the older one!)

Kinda-sorta-maybe thinking about picking up a Mamiya Six in solid condition for use while hiking; the only ones I see for sale are on the auction site, and they're in such questionable condition (with suspicious descriptions) that I don't want to risk purchasing from that venue. I'm open to configurations, but a model with the auto-cocking shutter would be much preferred.