Just had mine blasted. The originals were rebuilt, he offered one finish, did something else
Anyway picked them up today and nearly had a heart attack they were both
seized. Then realized oh yeah, nothing but some abused steel. So I oiled em up, put the 90 in a vise and back and forth until smooth as silk.
Then realized you have to do the same after they're finished or you're in for a bad day. Guy talked me into a Ceracote finish, see what happens.
You can tell a difference the rivets many NOS Vs older say. If memory serves me right the pic. in post #2 are the old rivets
Doesn't matter in my case, but the rebuilder got pretty close the old ones. I tried to get NOS, couldn't find one side so heck with it. NOS would have been cheaper
Oh yeah, I think I'd have paid $500+ no issues for old rivets, maybe $400 the newer ones. I sold the NOS (newer rivets) I had for $150-180 a few years ago.