1954 The 400th Anniversary of Angol City 1954 The 150th Anniversary of the Birth of Domeyko, Educationist and Mineralogist, 1802-1889 1954 The 100th Anniversary of Chilean Railways WM: 8 1954 The 75th Anniversary of Naval Battle of Iquique 1955 International Philatelic Exhibition – Valparaiso, Chile WM: 8 1955 The 14th Pan-American Sanitary Conference WM: 8 1955 Exchange of Visits between Argentine and Chilean Presidents 1955 Airmail WM: 8 1955 -1956 The 100th Anniversary of the Death of Jose Joaquin Prieto, President, 1786-1854 1956 Personalities WM: 8 1956 Personalities WM: 8 1956 Airmail – Aircraft WM: 8 1956 Airmail – Aircraft without Watermark 1956 Personalities 1956 The 25th Anniversary of Santa Maria Technical University, Valparaiso 1957 -1960 Airmail – Not Watermarked 1958 Gabriela Mistral, Poetess, Nobel Prize Winner, 1889-1957 1958 The 400th Anniversary of Osorno 1958 Antarctic Issue 1958 Airmail – Antarctic Issue 1958 National Philatelic Exhibition “EXFINA ’58” – Santiago, Chile 1958 The 100th Anniversary of Chilean Civil Servants’ Savings Bank 1958 International Geophysical Year