Canal Zone Dec. 12, 1904 2c rose Map of Panama (#11, 4P) tied by CRISTOBAL, FEB 19 1906, duplex on cover to U.S. with New York (2-27) & Washington (2-28) backstamps. 4th printing, dark carmine PANAMA overprint. Black CANAL ZONE overprint on Panama #77. Attractive cover! Slightly reduced at right.