373rd Heinrich Köhler auction - Day 1

1941, Official cover from court at Zemun, sent to Pancevo in German occupied Serbia, here taxed with postage due stamps 2 d. blue in horizontal pair and definitive 0,50 d., all tied by Pancevo cds., adjacent boxed bilingual censor mark, since the addressee left, the cover returned and the postage due stamps cancelled by blue crayon; interesting and scarce item