380th Auction
16-17 & 20-25 March 2023 in Wiesbaden
1879, UPU 2c. carmine, 5c. blue, 10c. black and 20c. purple, all tied by mute star cancel to double-weight registered cover with also partly tying red cds. "SALVADOR 27 NOVI 83" alongside to Munich, blue boxed "REJISTRADO" and red London transit alongside, "MÜNCHEN 30 DEC 83" arrival on reverse, despite some aging and minor imperfections a stunning four-color franking of which we have registered no further one, signed Schlesinger and certificate Rendon (1986)