1880 1/2pi on 20pa yellow green, horizontal pair, left stamp without "R.O." overprint, h.r., small flaws, fine appearance, signed Vedat Kocak, Sismondo (Cat No. 1a) (Image)

Est.US$250

1881 5pa black & olive, imperforate single, double impression of black printing, also imperforate pair of 10pa black and gray, fine and scarce plate proofs with gum, signed Vedat Kocak (Cat No. 10,11P) (Image)

Est.US$250

1881 5pa-5pi imperforate horizontal pairs, six different (including 5pa lilac), l.h., v.f. (Cat No. 10-14,15var) (Image)

Est.US$500

1881 5pa-5pi imperforate trial color plate proofs on card, five different, fine-v.f. (Cat No. 10-14P) (Image)

Est.US$300

1885 5pi rose & black, blue & black overprints, unused without gum, fine examples of these very rare stamps, the former signed Buhler, the latter Bloch and Sismondo, cat. $1775 (Cat No. 24,26) (Image)

Cat. $1775, Est.US$500

1885 5pi rose & black, blue overprint, l.h., fine, signed Buhler, cat. $1100 (Cat No. 24) (Image)

Cat. $1100, Est.US$300