As Canam said, post pictures on the vintage forum. The places that are usually most characteristic of various builders are seat lug area, including seat stays, top and down tube lugs, fork crown, stay/dropout joints, Right chainstay showing crimp or clearance for cranks, any braze-ons, and the location and format of serial number.

However, if your frame doesn't have any unique features in those areas, the most you might get is something like "generic Italian frame form the seventies"