Thanks guys. It's 1 inch, ID of 26.4. It is nicely made, however, it is a bit of a sore point for me. Bought a "NOS" Campagnolo Record French thread head set from a seller in France at it included a few parts that were definitely not original. I'm having a bit of trouble with the seller, who claims he bought it that way, etc., from a reputable seller with high feedback in France, so I am trying to document exactly what it is. That and I'm curious too. I thought maybe it might be Triomphe or Victory but don't have any experience with those. Live and learn, I guess.
