The signature of Dimitrios Gounaris, politician and prime minister of Greece in 1915 and in 1921-1922. Taken from a letter of his addressed to Eleftherios Venizelos, now kept at the Benaki Museum in Athens, Greece.
http://www.venizelosarchives.gr/rec.asp?id=41736
Dimitrios Gounaris (1867-1922) // Δημήτριος Γούναρης (1867-1922)