1960 2d+1d, 3d+1d Bird Semi Postals, Imperforate, mint never hinged, each value in a gutter sheet of twelve, with "Approved" and signature at bottom. From the Bradbury Wilkinson archives, very fine and rare. Rsv. $1,800. (Image)

Est $ 2,500

Two Mint Special Post Stamps, both issued by the GBP Service, with ACS #s VP-1 (toning spots) and VP-2. Both are hinged and fine-very fine. (Image)

Est $ 100

Three Mint Pigeon Post Stamps, ACS #s VP-1 and VP-2, both inscribed «Special Post» are hinged, the red Marotiri Island VP-6 is mint never hinged. Very fine. (Image)

Est $ 200

Great Barrier Island 1sh green Special Post, a rare mint block of four, top two stamps hinged, bottom stamps never hinged. Small toning spots on LR stamp, otherwise very fine. Purchased from Harmers (New York) in 1964. (Image)

Est $ 200

Group of 3 Mint Pigeon Post Stamps, including one mint hinged green Special Post VP-2 signed by air mail expert Kessler and another expert, as well as a set of Agency triangular stamps VP-7 and VP-8, where the unused (no gum) 6d value is handstamped "Sanabria N.Y." and the mint hinged 1/- has toning spots. Overall fine-very fine. (Image)

Est $ 150

Group of 4 Used Pigeon Post Stamps, a rarely offered group of one green Special Post VP-2 on flimsy fragment, one VP-4 Pigeon Gram used, and a set of Agency Triangular Stamps VP-7 (some rust) and VP-8 on flimsy fragments, both with clearly legible, dated cancels. Overall fine-very fine. (Image)

Est $ 300

A Rare Special Post Stamp Overprinted in Blue "MAROTIRI / Pigeongram", of which only 240 were printed. Mint hinged with sheet margin at right, signed by Aimé Brun (Paris) and purchased from Stanley Gibbons in 1973. ACS VP-5 (c.v. NZ$7,500) (Image)

Est $ 1,000

Agency Blue Triangular Stamps, an unused (no gum) block of four, plated to positions 3, 12, 13 and 14 as written in soft pencil on the back of each stamp, very fine. (Image)

Est $ 150

Pair of Agency Blue and Red Triangular Stamps Used on Flimsy Pieces, with neat readable cancels. Small toning spots. (Image)

Est $ 100