INTER-ALLIED COMMISSION - INTERIOR DEPARTMENT, 20 Pfg blue, 1 Mark red-carmine Steelworks and Dove of Peace 1920 on registered printed matter to Busto-Arsizio (Milano)/Italy, double-circle OPPELN 13 7 20 * 1 i (OS handbook no. 237.23), sender a French Interior Department member (manuscript sender in German), various Italian transits on reverse, rare franking, age and use wear typical of period