Apart from the YouTube clip on page 1 you can also check all the differences between the Paramount version and the long Italian version here:
The Scorsese restoration restored the following parts:
1) about 15 sec from the 31 sec at 0:10:12. If I remember correctly the theatrical cut contains only these 15 sec.
2) strangely also the additional 2,5 sec at 0:13:24 from the Rising scene (which is completely missing in the theatrical version)
3) half of a second in the McBain scene, where the Paramount cuts a little bit too early. Probably the master was faulty here, which was maybe the point of the first reel change. Not important, and not mentioned in this comparision, but when you know it you recognize what's wrong.
The most interesting moments of this long version are imo :
1) the tracking shot at 0:21:51
2) at 1:25:24 the short scene of Morton having some trouble with tin soldiers on his desk, the only really new part in this long version.
3) the scene at 2:00:10 is differently cut compared to the Paramount and the theatrical version, and also contains the only short piece of dialogue (one sentence) in the extra 12 min of the long version.
4) a 9,5 sec scene at 2:30:15 which is not in the long version, but is in the Paramount and in the theatrical version.
You can also see the color differences between the 2 versions where alternative material was used.
I'm generally happy that I was able to watch that long version, and I would like to have it for the sake of completeness as a bonus version on a future home movie release, but it should never replace the theatrical version as it happened in Italy. Longer is not always better.