The Turkish Flag that Osman Efendi, who came to Ayvalık from the Greek island of Lesbos with his family during the Turkish-Greek Population Exchange, hung on the boat he boarded while crossing to the homeland. After Osman Efendi's death, the flag was kept by his daughter Emine Duru YURTSEVER and later by his grandson Haluk YURTSEVER, and was donated to Trakya University on September 16, 2022 to be exhibited in the National Struggle and Lausanne Museum.