Canal Zone, 1962, 4¢ Thatcher Ferry Bridge, Silver (Bridge) Omitted, position 44, o.g., never hinged, bright and Post Office fresh, Very Fine and choice; with 1970 (photocopy) & 2005 P.F., 1970 Friedl (photocopy) and 1990 P.S.E. certificates for corner margin block of which this is the top left stamp. Scott No. 157a  $8,000. A VERY RARE EXAMPLE OF THE 1962 4¢ THATCHER FERRY BRIDGE ISSUE WITH SILVER BRIDGE OMITTED - ONLY FIFTY EXAMPLES PRODUCED. $0 (Image)