5 Guaranies Overprint on P#154

Paraguay's postwar monetary reorganization moved faster than its print orders could keep pace. Rather than wait for newly denominated stock from the American Bank Note Company, authorities applied a 5 Guaranies overprint to existing P#154 Peso notes — a stopgap that bridged the old Peso system and the Guaraní, introduced in 1943 at a fixed rate of 100 Pesos to 1 Guaraní.

The overprint itself is the document's entire reason for existing. ABNC's underlying plate work was already competent and familiar; what matters here is the conversion stamp, its color, placement, and whether it was applied cleanly — misaligned or doubled overprints are known and carry collector interest disproportionate to the base note's value.