Here I wasn't even thinking about which country owned it. I was wondering if an individual could lay claim to it. I suppose the salvage rights on land are much different than they are in the open sea. You're probably right, Egypt owns it.
Considering that Alexander the Great had conquered Egypt in 332 B.C., the ruler of Egypt in 190 B.C,. would have been Ptolemy V Epiphanes ,a descendant of a body guard of Alexander the great, the Greek leader.Ptolemy V Epiphanes also figures prominently in the book of Maccabees. If the coin proves anything, then the land belongs to Greece.