4 Reales Type IV Counterstamp

Costa Rica's early republican coinage was plagued by a chronic shortage of domestically minted silver. Rather than strike new coins from scratch, the Casa Nacional de Moneda applied counterstamps to existing foreign silver — principally Central American federation issues and colonial maccuquinas — to authenticate and re-authorize them for local circulation. The Type IV counterstamp of 1846 represents one of several successive counterstamping campaigns, each driven by changing political authority and the need to distinguish legitimate circulating currency from unstamped or fraudulently marked pieces.

The specific host coin underneath matters considerably to collectors — provenance from a Guatemalan or Mexican colonial real adds a layer of numismatic complexity not reflected in catalog numbers alone.