Did you happen to read my recent broken Atala thread? There's a link near the end, to a site where a guy who sounds like he knows, says that the tubing that Atala called Tullio, was probably an early iteration of Columbus Aelle. Maybe not in those exact words, but that was definitely the message they were sending. FYI, the middle of the line-up model, Gran Prix, used Tullio tubing, so it wasn't high-end or gas-pipe, it was right in the middle. I've only ever seen a few Olmo bikes, & they were definitely newer, like 80s or 90s, or maybe even newer. I'd love to be the guy who finds an older one, at a garage sale or something.