S.G. #55b, 1879 2p Mauve, error of color, an outstanding example featuring delicate pastel shade, very well centered displaying balanced margins all around, unused without gum, an enormously scarce and attractive variety, one of the premier exhibition pieces of Australian States philately; S.G. £20,000; Scott 31a, $20,000. (Image)

Est. $15,000-20,000