Son of Weldangrind and I picked up a new (to us) bike today. It's a '77 TS185, and it's virtually the same as my first bike, a '78 TS100, which I still have.
It's really ugly, but it starts first kick and has valid registration. I promptly bought a license plate and insurance for it right after it was in my trailer. I brought it home, changed the oil, cleaned the plug, stuck a China filter on it and took it for a ride.
The only light that works right now is the headlight, but I can use hand signals. We'll be slowly buying stuff for it, but it is rideable.