1928 5c Brown Olive Airmail, two mint upper marginal plate blocks of 10. Plate 1 is hinged in margin only (10 stamps are never hinged) and plate 2 is re-attached on several stamps, separated in several places and the others have light gum disturbances. Overall very fine centering and catalogued as plate 1 (hinged plate block plus 2x NH) and plate 2 (8x hinged plus 2x NH). (Image)

Unitrade $ 495

1928 5c Brown Olive Airmail Vertical Pair, Imperforate Horizontally, mint never hinged, with a very light wrinkle mostly in top margin, else fine-very fine. (Image)

Unitrade $ 403

1932 6c on 5c Brown Olive Airmail Surcharge, mint never hinged, well centered among four large and balanced margins, quite fresh and extremely fine. Accompanied by a 2007 Sergio Sismondo certificate grading it as "XF-Sup 95 OGnh". A very nice stamp, catalogue value irrelevant. (Image)

Unitrade $ 30

1932 6c on 5c Brown Olive Airmail Inverted Surcharge, mint hinged, with balanced margins, very fine. Accompanied by a 2021 Richard Gratton AIEP certificate. (Image)

Unitrade $ 300

Group of Complete Mint Never Hinged Airmail Sheets, starting with Scott # C9 ($112), CE1 ($268), CE4 ($573 separated in half horizontally) and CO2 (two sheets, at $1,402 each). Overall very fine, and includes a small group of Norway and Sudan large mint blocks (not counted). (Image)

Unitrade $ 3,757

Valuable Dealer Stock of Mint Airmail Issues, all presented in 166 black stock cards with catalogue number and dealer's asking price, separated by hinged and never hinged. Includes various quantities of singles, pairs and blocks of four, including plate blocks. See online pictures for a sampling of the cards, overall fine to very fine, with a high catalogue value. The "retail" value given is a total of the dealer's asking prices for these. (Image)

Retail $ 22,474

Dealer Stock of Mint Special Delivery Airmail Issues, all presented in 109 black stock cards with catalogue number and dealer's asking price, separated by hinged and never hinged. Includes various quantities of singles (incl. 33 complete sets), pairs and blocks of four, including several plate blocks. See online pictures for a sampling of the cards, overall fine to very fine, with a high catalogue value. The "retail" value given is a total of the dealer's asking prices for these. (Image)

Retail $ 2,635