Gitane1 I have read up on Estermann frames. This particular frame is size 58cm. I've taken an emery cloth a cleaned out the seat tube pretty well and I was finally able to finesse a 26.6mm seat post inside and I think that is the correct size. While this is a nice frame, the paint is somewhat beat to shreds and one thing that I just found out the hard way is that the bottom bracket threads are fouled up I suspect that someone tried to force an English threaded bottom bracket in the BB shell or something like that. So anyway I just installed a threadless bottom bracket yesterday and now all I really have left is the cables, chain and handlebar wrap. Almost all the parts I've used have come from the parts bin. This thing is going to be UGLY when I'm done.