1896 50c violet, with second impression of 100c violet stamp, horizontal pair, additional impression of "1" at left (giving appearance of "150" error), unused without gum as issued, border on three sides, periods puncture paper, with some creasing, fine and unique multiple error, signed Schleinger, ex-Hind and Dale-Liechtenstein collections (Cat No. SG 51var) (Image)

Est.US$2,500