I don't believe it is a De Rosa built by Ugo and family. It might be a Neapolitan De Rosa. The BB is a simpler than anything that I have ever seen on an De Rosa, the De Rosa scripts are not in line with what one normally finds on De Rosa bikes. The heart BB cut-out was stopped long before this frame was built with those chainstay and seatstay bridges. I would not dare resell it claiming it to be built by Ugo and sons.