I have a 1975 Austro Daimler Vent Noir frameset. The seat tube is 25" center to top (63.5 cm), or about 24.5" center to center (62 cm). The top tube is 23.5" (60cm) center to center.
The frame is the classic Vent Noir in matt black with original paint and decals, Shimano dropouts, and made of Reynolds 531. The frameset is in excellent and overall condition, with no major scratches and no dents, dings, or rust. In my opinion, it is about as nice as you will find given the age, just a little bit of oxidization begining on the letters spelling "Austro Daimler" on the downtube.
Offered first to the list for $250 plus shipping. I also have two pretty nice black Dura Ace Groups with black Shimano Crane rear derailleurs at $300 and $350.
Jeff Pyzyk
Milwaukee, WI