10 000 Guaranies

Paraguay's 10,000 Guaraní denomination has been produced by at least four different security printers across three countries simultaneously — Casa da Moeda do Brasil, De La Rue, Oberthur Fiduciaire, and PWPW — a level of outsourcing fragmentation unusual even for a small central bank. Notes from this series are visually identical regardless of origin, with no printer identification visible to casual inspection, though specialist collectors differentiate them by subtle paper texture and security thread specification.

The watermark remains the sole catalogued security feature across all print runs, a notably thin specification for a high-denomination note issued well into the 2000s.