1904 2c rose, violet-blue overprint horizontal
1904 5c Canal Zone stamp, violet-blue horizontal overprint
1904 10 yel, violet-blue overprint horizontal
1904 1c Canal Zone - Franklin Overprint up, green & black
1904 1-5c Canal Zone Overprints
1904 2c Canal Zone - Washington overprint, carmine
1904 5c Canal Zone - Lincoln, overprint up, blue
1904 8c Canal Zone - Martha Washington, overprint up, black
1904 10c Canal Zone - Webster, overprint up, pale red brown
1904 1c Canal Zone - Map of Panama, overprint, horizontal, green
1904 1c grn, CANAL in Antique Type
1904 1c grn, ZONE in Antique Type
1904 2c Canal Zone - Map of Panama, rose
1904 5c Canal Zone - Map of Panama, Black overprint, blue
1904 5c Canal Zone - "PANAMA" double overprint in black and bar in red, blue
1904 10c Canal Zone - Black overprint horizontal, yellow
1904 8c on 50c Canal Zone - Map of Panama, overprint, brown.
1906 1c on 20c Canal Zone - Map of Panama, overprint, violet
1906 1c on 20c Canal Zone - Map of Panama, violet type b
1906 1c on 20c Canal Zone - Map of Panama, violet type c
1906 2c on 1p Canal Zone - Peso Map of Panama, overprint up, lake
1906 2c on 1p Canal Zone - Map of Panama, lake, type E
1906 2c on 1p Canal Zone - Map of Panama, type F, lake