Air Post stamps. 1933, Bari Exhibition, red overprint on ''Patakonia'' issue, complete set of four, very fresh and nicely centered, each stamp has security black handstamp on reverse showing a plane inside circle, full OG, NH, VF, C.v. €2,000 (Image)

Athens Olympic Games Proofs. 1906, Victory, imperforated plate proof of 10L in greenish blue, printed on thin white cardboard, block of four, no gum as produced, VF and scarce multiple (Image)

Athens Olympic Games Proofs. 1906, Hercules and Antaeus, perforated plate proof of 25L in rose carmine, printed on white thin cardboard, no gum as produced, NH, VF (Image)

Athens Olympic Games Proofs. 1906, Hercules and Antaeus, imperforated plate proof of 25L in rose carmine, printed on white cardboard, block of four, no gum as issued, VF (Image)

Athens Olympic Games Proofs. 1906, Daemon of the Games, imperforated plate proof of 40L in blue, printed on light blue cardboard, block of four, no gum as produced, VF and scarce (Image)

Athens Olympic Games Proofs. 1906, Atlas and Hercules. imperforated plate proof of 50L in lilac, printed on light blue cardboard, block of four, no gum as issued, VF (Image)

Athens Olympic Games Proofs. 1906, Foot Race, die proof of 2d in gold, printed on thin cardboard, size 68x47mm, no gum as produced, VF and rare, expertized by P. Holcombe (Image)

Athens Olympic Games Proofs. COLLECTION: 1906, 18 items, 1L-5D, including six trials on ordinary paper and twelve plate proofs, some of them are sunken die on cards, in addition two mint stamps of 1L and 5D, clean condition, no gum as produced (issued stamps with OG), VF and a colorful assembly (Image)

Flying Mercury Imperforates. 1901, six items properly identified by Karamitsos Cat., including three different blocks of 1L, blocks of 10L and 1D (engraved), a single of 5L with double printing of green and black colors, fresh and nice, full OG or no gum as produced, VF (Image)