1000 Guaranies Banco Central del Paraguay

Paraguay's 1952 currency reform abolished the peso and introduced the guaraní at a conversion rate of 100 pesos to 1 guaraní, making the 1000 guaraní note — issued the same year — a significant face-value instrument in an economy that had suffered through decades of chronic inflation and political instability. The number of signature combinations across this series is unusually high for a single pick number, reflecting the revolving door of finance ministry officials through the 1950s, a period that saw multiple coups and forced governmental reshuffles.

The fibres-at-right variant marks a mid-run security upgrade by De La Rue, not a separate issue — worth distinguishing when cataloguing.