In some parts of the world not many people have heard of Olmo (like in England), as a result many shops have stocks of these frames from seasons ago and will often re-kit them with modern parts to sell as complete bikes. With the exception of Columbus Aelle, Olmo started using Dedacchia tubes from the late 90's onwards (mine is '99 made from deda tubes). The serial number should hint at a year, if not, then the name 'Sanremo' on the toptube could be a clue as to the companies founder, Giuseppe Olmo, won the Sanremo race in 1935, which hints at a possible 60th anniversary frame...1995.