1915 10c on 10c Canal Zone Postage - surcharged in red, olive brown

1939 30c Canal Zone Airmail - Pam Am Clipper over Gaillard Cut, rose carmine

1976 35c Canal Zone Airmail - Seal & Jet, salmon & black

1915 10c Canal Zone Postage Due - black overprint, type II, olive brown

1929 10c on 5c bl, ovprnt

1929 10c on 50c Canal Zone Airmail - Blackburn, lilac

1958 15c Canal Zone Airmail - Globe & Wing, brown violet

1939 25c Canal Zone Airmail - Pan Am Clipper at Cristobal Harbor, blue

1919 2c on 2c Canal Zone Postage Due -Surcharged in Carmine, type III, olive brown

1915 1c on 1c Canal Zone Postage Due - surcharged in red, olive brown

1932 10c Canal Zone Postage Due Seal, claret

1951 21c Canal Zone Airmail - Globe & Wing, light blue

1915 2c on 2c Canal Zone Postage Due - surcharged in red, olive brown

1939 $1 Canal Zone Airmail - Pan Am Clipper Landing, green

1941 15c Canal Zone Postage Due Seal, claret

1930 5c on 5c bl, ovprnt

1951 31c Canal zone Airmail - Globe & Wing, cerise

1924 2c Canal Zone Postage Due - overprint, type A, deep claret

1914 1c Canal Zone Postage Due - watermark, perf 12, rose carmine

1941 20c Canal Zone Airmail - Gaillard Cut, "PANAMA CANAL" overprint, type I, red violet