1906 1c Violet Postage Due, a mint never hinged lower right corner block of 18, quite fresh and very fine to extremely fine. (Image)

Unitrade $ 1,440

1930 10c Dark Violet Postage Due, Imperforate Horizontally, a mint upper sheet margin vertical block of eight, from the unique sheet, the stamps are never hinged, hinged in upper margin only, close to the top stamps). As per the accompanying census photocopy (mock-up) of all known items in this sheet, this is not only the largest block known, but the bottom block has the best possible centering, as most of the stamps in this sheet are off-centre, due to the "diagonal slant" of the vertical perforations. Fine-very fine overall and rare. A very desirable item.

Ex Calvin Cole and John Larson collections. (Image)

Unitrade $ 16,000

1934 1c Dark Violet Postage Due, Imperforate, a mint never hinged vertical pair, fresh and very fine. Only 100 pairs were issued. (Image)

Unitrade $ 1,000

1935 1c, 2c, 4c and 10c Postage Dues, Imperforate, each value in a mint never hinged upper or lower sheet margin horizontal pair, fresh and very fine plus. The other values were not issued imperforate, and this is a nice quality set, as many have disturbed gum due to improper storage. Rare, with only 100 pairs issued. (Image)

Unitrade $ 1,800