1923 10k on 4k and on 14k Romanov stamps, inverted surcharges, h.r., v.f., signed Mikulski, etc., with Raybaudi certificates (Cat No. Mi.I,II var) (Image)

Est.$250

1923 10k on 4k Romanov, double surcharge, one inverted, paper h.r., pre-print diagonal crease, fine and scarce variety, signed Mikulski (Image)

Est.$250

1923 Vladivostok 20k on 50k red overprint, canceled to order, v.f., signed Stolow, Dr.P.Jemchouchin, etc., with 1958 Philatelic Foundation and 2000 Mikulski certificates (Cat No. Mi.56) (Image)

Est.$500

1923 Vladivostok 20k on 50k red overprint inverted, h.r., fine and rare variety, signed Sanabria, Bloch, Lissiuk, etc., with 1981 Mikulski certificate (Cat No. Mi.56K) (Image)

Est.$750