msycamore said:

Well, the guy you talked to who worked in that book store, said there was the '76 release (I assume this is what we have preserved) and an Italian re-release in '78 or '79, I just thought it would be interesting if it is the re-release version, and if it is, I would guess it was treated with a new dub with all the additional scenes and audio work needed for that cut?

It would be the first time in the history of Italian dubbing to have a re-dub after only two years from the first release, but then again this film did have a peculiar story on its Italian distribution.
I still couldn't get a hold of the curator of the first dub... but I'm now in touch with a professional dubber (voice of Steve Buscemi) so I might ask him if the guy is still alive.

About the SEN scene, I find it very nice... playing with the kids and everything. It shows that he's not a villain, I never considered him to be one but that scene surely adds more humanity to the character.