Eyy, I unearthed my first real camera. I used this, then switched to a Rolleiflex SL 35 M, then that stopped advancing properly, and then good digital SLRs became a thing.
The Contaflex is really nice, but is sort of weird in that you can’t actually see through the viewfinder until it’s cocked, but it’s bad for it to leave it like that. Focusing is also done with little nubs around the lens, rather than a ring. Still great to use, though.