Letter from STEINWAY & SONS, NEW YORK to German branch in Hamburg, carried on 2nd return voyage of submarine Deutschland, BERLIN acceptance, front L3 "Geprüft Auswärtiges Amt in Berlin" (examined by Foreign Office, Berlin), circular postage-due mark and manuscript 35 (Pfennig postage due), opened on three sides, Günter Wagner BPP certificate (2026): "condition faultless apart from vertical crease", Mi. 12000,-