Stamps Year 1991

1551 - Flowers, Rose silver jubilee
joaquín iturrioz
1124 - Christmas
joaquín iturrioz
Algeria
David Merino Gòmez
5857 - Ivan P. Pavlov, Nobel Prize winner
joaquín iturrioz
Exchange
Héctor Blaz Rodríguez
2245 - Red-crowned Crane
Manuel Briones
2974 - Red-crowned Crane
Manuel Briones
2972 - Gray Heron
Manuel Briones
2971 - Lesser Spoonbill
Manuel Briones
Romanian pole arms
Jose Roberto Lara