Can you tell if these are widowmakers?

[C10 - C90 Bill]

Yeah, before I even heard the name "Widowmaker" I had an old rusty one that I got as a spare wheel with my '62 GMC 4000 and never mind not hearing about them, it was actually the first one I even seen. I sent it out to be sandblasted and it wasn't cheap. The metal itself looked nice and clean once I got it back, but the more I studied on it, the more I knew not to use it.

I think it was the prettiest piece I ever dumped in the scrap pile...