1900-05, Coat Arms, trial issues of 1h-5k, three complete sets of 11, 20 and 5, one perforated (12½x6½) on white ministerial paper and two imperforated on very thin yellow paper (so-called Japan paper), full OG or no gum as issued, F/VF, Mi #10/23, 24-28, €800++, Est. $200-$300 (Image)

1906, View of Mostar, trial color proofs of 2h, left sheet margin single in dark violet, imperf vertically and two imperforated blocks of four in lilac and black, all printed on wove paper, full OG (block in lilac) or no gum as produced, VF, Est. $100-$150 (Image)

1904, Numerals, 1h-200h, complete set of 13 die proofs on thin cards, all in black and yellow, except 200h in black and pale green, approximate size 57x50mm, fresh condition, no gum as produced, VF and scarce, ANK Porto1-13, C.v. €280, Est. $200-$300 (Image)