I had the remains of a 1949 ZA7S plunger frame, originally sold in Halifax, Nova Scotia Canada. It was given to me by the original owner about 1987. No engine, tank or rear wheel, but most all of it was still there. The owner still had a 1953 A10 Golden Flash he bought to replace it when the Star Twin was stolen and wrecked. Apperently, thieves tried to jump the Star Twin over some construction and crashed it. The frame had a bent front section.Unfortunately, I left it at a friend's house after I stripped it down, and his mother's new boyfriend cleared out the shed of his dad's old stuff (or so he thought) and away went the frame to the dump.
Fortunately, I still have all the other bits including the front end and fenders that I am using on my 1948 A7.
This picture shows the "gang" heading out on a run, the owner of the Star Twin was Fred at the far right, in the leather Jerkin. He was a Dispatch Rider Instructor during WW2 , the Star Twin is behind the guy waving (and obscuring the tank badge!!).