Well! Enough details match to say definitely is a Italvega (Torresini) product, even seems there was at least a model with Campy ends that did not get any BB shell piercings, like the "Super Light", but have welded shells. HOWever, either the OP's had the under-bb guides and stop brazed on after-market OR this was a latest of the '70s model, so would have been toward the end of the Italian line for the "-vegas" and just about when Mr. Lawee was transitioning to Japan and launching "Univega".