1885 5s on 30s black & fawn, block of four, h.r., fine, scarce multiple (Cat No. 21C) (Image)

Est.$250

1907 Tsar Ferdinand, 10s, 25s vertical pairs imperf. between, also additional vertical imperf. pair of last, plus 25s bi-color die proofs, four different, also imperforate 2s trial color proof on gummed paper, v.f. lot (Cat No. 75,76var) (Image)

Est.$500

1909 Tsar Ferdinand, unissued design, selection of nine different trial color essays of 10s, fine-v.f. (Image)

Est.$500

1912 5s yellow ochre (error), used, v.f., with 1992 Karaivanoff certificate (only 50 issued, this error was first described in 1927) (Cat No. 101var) (Image)

Est.$500

1924 20s on 10s violet, varieties imperf. at top and at bottom, fine (Cat No. 184var) (Image)

Est.$200

1924 20s on 30s orange, variety imperf. at bottom, also a block of four, imperf. at right, fine (Cat No. 185var) (Image)

Est.$250

1925 10s Tsar Boris, unissued design, 15 trial color die essays (13 different shades of yellow, blue, green & red) plus 10s imperforate block of four, mounted on five 2001 V.P. Karaivanoff guarantee sheets, v.f., scarce group (Image)

Est.$500

1931 Balkan Games, complete set, n.h., pencil signed on reverse, fine-v.f. (Mi.242-48, Euro 320) (Cat No. 237-43) (Image)

Est.$150

1934 Shipka Pass Battle, set of two souvenir sheets of six, containing six stamps each, n.h., one with usual paper wrinkling and perf. strengthening, fine-v.f. Of the 100 of each printed, only a small portion survive today, cat. $3000 (Cat No. 253-264var) (Image)

Cat. $3000, Est.$1,500

1935 5th Balkan Soccer Tournament, complete set, n.h., fine-v.f. (Mi.274-79, Euro 550) (Cat No. 267-72) (Image)

Est.$150

1933 2nd SAF card to Brazil, franked on both sides, with Berlin connecting cachet, fine (Image)

Est.$250