I picked this frame up a couple months ago near Eindhoven. Originally purchased in Belgium, I have yet to be able to source it’s origin. There are no markings on the bottom bracket, and the paint was not original. As you can see from the pictures, we are in the process (getting fed up finessing bits of sand paper in to the finer parts of the lugs) of removing the paint. The head tube is drilled for a metal badge, and it has chromed Campagnolo dropouts, 1010/A. The seat tube is stamped Reynolds 531, making it a double butted, steel frame, with long point, cut out lugs. If any of you out there have information on Belgian bikes, of the 60s-70s vintage, drop a line and tell us what you know.