When Snaps slams Anthony on the table his hands are on his shoulders, in the next shot his hands are around his neck.
It is highly unlikely that Snaps's Italian father would have a Byzantine icon hanging on his wall.
When Aldo points the revolver at Anthony when Anthony admits to stealing from Snaps, the cylinder is askew, which would prevent the gun from firing as the firing pin would have struck between chambers.
Aldo makes reference to Little Anthony and his Imperial. While we take this as an anachronistic reference to the doo-wop group, he could have meant it only as a reference to the car, so it's not wrong for him.
When Dr. Poole first meets Little Anthony, he comments on Anthony's New Jersey accent. Anthony never said a word in front of Dr. Poole before Poole made this comment.
When Snaps learns that Anthony stole $50,000 twice, he agrees to a deal that would still leave half of his stolen money (in jewelry) in Anthony's possession.