10 Test Note Siemens Nixdorf

Siemens Nixdorf Informationssysteme AG produced these test notes internally for calibrating and validating their banknote processing and sorting machinery — the same equipment sold to central banks and commercial cash handlers worldwide. Not a currency, not a fantasy note. A calibration tool, manufactured by an engineering firm that emerged from the 1990 merger of Siemens's data systems division with Nixdorf Computer AG.

Surviving examples occasionally surface in the collector market, where they occupy an awkward category: not quite exonumia, not quite ephemera. The printer and issuer being identical is the point — these never left the production and testing environment they were built for.