I have the head & barrel off my 1961 Golden Flash as I have a couple of fins to weld and my dodgy knee precludes riding at the moment

I know this engine should have the later (big journal?) crank and sports (356?) cam but am not sure what I actually have. I know I do have thin flange barrels which isn't right.....
Just to satisfy my idle curiosity, how can I tell which crank & camshaft I have without further dismantling?