Rather than further obfuscating Simon's "What goes in this hole, then?" topic, which has gone down more roads than what was originally in that hole, I thought I would just make this new topic for when Orabanda's bikes are the issue. Aside from a museum, I don't know who has more. (Brian, Trevor, I know you are up there in count, as well.) Those of us with only one have more time for typing and for owning your bikes vicariously.
So, Richard, and others here, my current question surrounds the toolbox on the bike in the pictures that I think is a '54 Golden Flash, based on the engine number "CA10 562". Do you know the exact years for which the flat-topped swingarm toolbox is correct? I had figured that the round-top box on my '55 was correct, as the owner before '73 seems to have scavenged an A50 for the not-correct parts on my bike. So, I can't quite figure out how the round-top box got there if it is not original.
"Why," you ask, "have you kept the A50 parts?" That's something of a twisted story, but one reason is that, in '73, when I bought the bike for U.S. $50, I knew nothing and didn't care about parts originality. After U.S. $3,000 to a shop for restore, the left-turner (U.S., of course) did his job in '79. Keeping the old parts is, aside from cheaper, a bit of an homáge to this bike of my past and present.
Richard L.