Yeah, I bet you are right about a blacksmith making that swing arm. And, I agree that he knew his stuff. It is a perfect fit with the old original bolt going straight thru it and then the yoke. As for polishing it - that's a tough call. There is a picture of a very similar sized but later cast Meneely Bell on the Lowerbells website all polished up. Looks great and almost new. But, I don't know that I want that because you look at mine all patinated and rusty - you don't have any wonder if it is old. Anyway, I have thought about having a machine shop weld me together some A-frames but I think I am going to search around a bit to see if I can find something if not period old, at least ornate. Tell you - I was looking online at some old cast iron treadle singer sewing machine tables. Made me laugh and tell the sweetheart - look at that - tear the fancy scroll work legs and the treadle wheel off, slap them together and there is my bell cradle and wheel.
Course she is a killjoy and suggested it won't hold the weight which I hate but have to agree. Anyway, I'll find something, and in the meantime, can tell you I took your advice and decided to put it in the house. Leastwise until I figure out a " thief proof" way to leave it out. With that in mind; maybe my next research should be on how is bronze at conducting electricity.