8 Reales Type I Countermark

In 1841–1842, Costa Rica lacked the infrastructure to mint its own full coinage and instead counterstamped circulating Spanish colonial 8 reales — primarily Guatemalan and Mexican milled issues — to legitimize them as national currency. The Type I punch, applied under the authority of the nascent republic, is notoriously inconsistently struck; many examples show a partial or faint impression, a direct consequence of hand-applied dies and no standardized striking pressure.

KM#27 encompasses a wide range of host coin types, and the origin of the underlying 8 reales materially affects collector value. Guatemalan hosts are among the more frequently encountered; South American hosts, rarer.