1947-51 Dodecanese Union 50D die proof in orange-red in sheetlet form on gummed paper, 41x49mm, very fine (Image)

1947-51 Dodecanese Union 450D die proof in black on card, 87x105mm, showing an enlarged design in sheetlet format, small crease clear of design otherwise fine (Image)

1947-51 Dodecanese Union 500D die proof in orange-red in sheetlet format on gummed paper, 39x52mm, very fine (Image)

1947-51 Dodecanese Union 600D die proof in orange-red in sheetlet format on gummed paper, 40x51mm, very fine (Image)

1947-51 Dodecanese Union 1’000D die proof in orange-red in sheetlet format on gummed paper, 39x50mm, very fine (Image)

1951 Marshall Plan 1’000D essay die proof in orange-red on thick paper in sheetlet format, 79x105mm, with the design representing “Industry,” the same as used for the issued 700D value but with blank inscription at top, very fine (Image)

1951 Marshall Plan 2’000D essay die proof in dark green on thick paper in sheetlet format, 75x105mm, with the design representing “Fishing,” the same as used for the issued 800D value but with blank inscription at top, very fine (Image)

1951 Marshall Plan 2’000D essay die proof in blue-green on thick paper in sheetlet format, 71x103mm, with the design representing “Reconstruction,” the same as used for the issued 1’300D value but with blank inscription at top, very fine (Image)

1951 Marshall Plan 000D essay die proof in black on thick paper in sheetlet format, 74x103mm, with the design representing “Agriculture,” the same as used for the issued 1’600D value but with blank inscription at top, very fine (Image)

1951 Marshall Plan 2’000D essay die proof in black on thick paper in sheetlet format, 73x104mm, with the design representing “Textiles,” the same as used for the issued 2’600D value but with blank inscription at top, very fine (Image)

1951 Marshall Plan 1’000D essay die proof in violet on thick paper in sheetlet format, 74x108mm, with the design representing “Electrification,” the same as used for the issued 5’000D value but with blank inscription at top, very fine (Image)

1952 Royal Birthday study by Prof. Demetrios Galanis in brick-red ink and pencil on card, 29x42mm, signed below, fine, attractive and possibly unique (Image)

1952 Royal Birthday study by Prof. Demetrios Galanis in brick red ink on card, 30x42mm, some toned spots otherwise fine (Image)

1961 Minoan Art 20L trial colour proof in unissued colours on watermarked and gummed paper, 42x47mm, very fine (Image)

1961 Minoan Art 50L trial colour proof in unissued colours and missing black resulting in no value, on watermarked and gummed paper, 53x32mm, very fine (Image)

1961 Minoan Art 1D trial colour proof in unissued colours on watermarked and gummed paper, 50x37mm, very fine (Image)

1961 Minoan Art 6D trial colour proof in unissued colours with some small differences in design to the issued stamps, on watermarked and gummed paper (part og remaining), 45x29mm, very fine (Image)

1961 Minoan Art 10D trial colour proof in unissued colours on watermarked and gummed paper, 55x33mm, very fine (Image)

1967 Europa 2.50D die proof in light blue, blue and purple (unissued colours), imperforate on ungummed and watermarked paper, very fine & scarce (Image)

1967 Europa 2.50D die proof in light brown, brown and green (unissued colours), imperforate on ungummed and watermarked paper, very fine (Image)

1967 Europa 4.50D die proof in light green, green and brown (unissued colours), imperforate on ungummed and watermarked paper, very fine (Image)

1902 London issue 2L trial engraving die proof in black on thick glossy paper in sheetlet format, 52x57mm, fine (Image)

1902 London issue 10L trial engraving die proof in black on thick glossy paper in sheetlet format, 53x55mm, fine (Image)

1902 London issue 30L trial engraving die proof in black on thick glossy paper in sheetlet format, 48x55mm, fine (Image)

1902 London issue 1D die proof in black (issued colour) on thin wove paper in sheetlet format, 44x48mm, fine (Image)