Sc.129/135, 1924 Centenary of annexation of Province of Guanacaste, set of 7 blocks of 4 with SPECIMEN overprint and punch hole, excellent quality, market value US$120 or more! (Image)

Official cover of President Rafael A. Calderón Guardia, franked by official stamp of 20c. with punched "star", sent on 20/MAR/1941 to Argentina, including signed letter, very rare! On reverse a marking of topic FOOTBALL/SOCCER! (Image)