I became a member of Verband Philatelistischer Prüfer e.V. for the provisional issues of Democratic Federal Yugoslavia (Cetinje, Ljubljana, Maribor, Mostar, Murska Sobota, Sarajevo, Senta, Split, Zagreb) and local issues of the Independent State of Croatia (Banja Luka, Dalmatia, Međimurje, Šibenik I & II).
