Found Athens student ID card with blue stripe

Found a university student ID card this afternoon around 3:15pm near the Acropolis Museum entrance on Dionysiou Areopagitou Street in Athens. The card is roughly credit-card size, white plastic with a blue gradient stripe across the top, a small portrait photo on the left, and the owner's name printed in both Greek and Latin scripts along the bottom. The back has a tiny coffee stain in the corner and a slight bend at the bottom-right, with an ID number faintly visible. Since it includes personal info, I want to get it back to its owner—if this is yours, we can arrange a quick pickup near Syntagma or at a nearby metro stop.