Costa Rica
High Quality 20th Century 5 Centavos Collection, KM147, KM151 and KM169 include both 5 Centavos (those dated 1917 -1919) and 5 Centimos (beginning in 1920). This octet from the Fred Mayer group was believed by one collector to be the highest quality examples from each date. The 1917 -1918 -1919 are each EF or so, perhaps better. The 1920 -1929 - 1936 -1938 and 1940 are either UNC or very close to such. Scarce assemblage under-appreciated except by specialists.
Estimate: 400-600 USD