Greetings, I recently bought a Olmo 57cm road frame. I can't see any serial numbers or stamps of any kind. Olmo is engraved at the top of the seat stays, the columbus sticker is so rubbed off I can't tell what the tubing is, and the rear dropout is Gipiemme. Oh yeah, it's not chromed anywhere. Clearly not the best frame, but I'd still like some help in determining year and model. I can post some pictures, but I'm not certain where to do that.