I have three of these wooden shift knobs with vintage coins/tokens inset in them. They were made by a HAMBer (Kirk!) a long time ago. I don't remember the types of wood but they have really nice patterns to them. Only one was used, and it has wear. The others haven't been used. They weren't cheap, way back when. They're all really neat. The black one has some blemishes in the finish, now. I can't remember the thread size, at the moment. I did have to use an adapter in my A. I got it from McMaster Carr, I think . I'll take a look for that, too. I'll take $40 each or $105 shipped.