In the last scene, Dimitris opens the envelope and takes out the necklace. In the next shot, however, he also holds in his left hand the photo which was in the envelope, without ever taking it out.
At 39:02, Professor Dimitris Lainis can be seen in a lecture room during class, circling the number 220 in his notepad. Directly above that, notes (about Hristina Desylla) that he wrote later on (at 39:36) can be spotted.