16c Red & Blue, Air Post Special Delivery, Horizontal Pair, Imperforate Vertically (CE2a). Mint N.H. with selvage at right, pencil positions 44 and 45 on back, radiant colors

VERY FINE. A CHOICE EXAMPLE OF THE 16-CENT RED & BLUE AIR POST SPECIAL DELIVERY HORIZONTAL PAIR, IMPERFORATE VERTICALLY.

A single sheet of this error was discovered at a Buffalo N.Y. post office. It was ultimately broken up by H. E. Harris & Co. after showing the complete sheet at the 1947 New York City CIPEX Show. Datz states that 10 pairs are recorded.

Ex Liberman. With 1990 P.F. certificate

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