CANAL ZONE, 1907, 1c Green & Black, Imperforate Horizontally (22c, CZSG 22c). Vertical strip of three with horizontal perforations at bottom only, slightly disturbed original gum, deep rich colors, wide margins, rounded corner at bottom left not affecting error pair

VERY FINE AND CHOICE. A RARE EXAMPLE OF THIS IMPERFORATE HORIZONTALLY ERROR. ONLY 20 PAIRS WERE ISSUED, AND MOST HAVE BEEN LOST TO PHILATELY.

According to Canal Zone Stamps, the top five rows of one pane were missing the horizontal perforations. Evidently most of the errors were used, as only three unused pairs and two strips of three (both with perforations at bottom) are known.

Ex Conger, Plass and Drucker. With 1969 A.P.S. certificate. Scott Retail as a pair.

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