cover 10pa. brown, 25pa. carmine and 40pa. mauve (all perf. 9½x12), affixed to 1872 (27 Nov.) entire registered to Vienna (11.12 arrival), tied by "BEOGRAD" c.d.s. and showing framed "P.D." and "RECOMM" in black adjacent; a little staining, however an extremely rare example of a Prince Milan issue three colour franking. M.12/15/17IC. Photo