The first shot of the curator putting a phone handle on its receiver is flipped horizontally. Notice the handkerchief in his pocket is on the wrong side. Also this shot is taken from the end of the scene in which he calls Duce later on in the story.
In the first scene following the opening credits, when Duce stops Chuche from hitting Peter, a piece of camera equipment pop into frame from below. Also, in the background two chalk marks are visible on the floor to indicate the places for the next piece of dialog between Duce and Chuche, who immediately move on to these marks.