He has a very nice role as a bad guy named Sam in the fotoromanzo Le avventure di Jacques Douglas N. 16: "La spirale della follia" (published January 1967):
And now to the good news: he was actually CREDITED! So now we finally know his name: Vezio Natili!!!
A very lucky identification because it looks as if this is the only
fotoromanzo for Lancio where Natili was credited (even though he did many, many more).
Natili also has one film in his IMDb filmography: Napoli... la camorra sfida, la città risponde
(1979). I don't have this film but I am sure some of you others have this film and can check it!