Stamps Year 1977

Navy Day
Walter Eduardo Espindola
Army Day
Walter Eduardo Espindola
FMA 50th Anniversary
Walter Eduardo Espindola
Air Force Day
Walter Eduardo Espindola
UN Water Conference
Walter Eduardo Espindola
2441 - Buildings in Sofia (Bulgaria)
Manuel Briones
1882 - Curiosity of nature, rocky slope
joaquín iturrioz
1879 - Karst spring, meadows in Thuringe
joaquín iturrioz
1877 - Albrecht Daniel Thaer
joaquín iturrioz
1876 ??- Otto von Guericke
joaquín iturrioz