Check out this auction for a De Rosa frame: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7106150397
As this is obviously not the handiwork of Ugo and family, I wrote the seller, asking for more details. His response was: "I never said this was made by Ugo De Rosa. I did claim it to be a De Rosa frame and this is why I even showed the name on the top tube."
Don't you just love ebay?