WWII Occupation - Serbia Official MiNr. 1 This was the only official stamp issued for use in German-occupied Serbia. Set Date(s) 1 January 1943 Watermark(s) None Album Page(s) We cannot display this gallery Official MiNr. 1 This was the only official stamp issued for use in German-occupied Serbia. Set Date(s) 1 January 1943 Watermark(s) None Album Page(s)