10 DM Test Note

Siemens Nixdorf produced test notes like this one for ATM calibration and banknote processing equipment — not for any central bank, not as a currency proposal, but purely as a mechanical reference object. The dimensions deliberately approximated Deutsche Mark specifications so that sorting and dispensing machinery could be tested under realistic conditions without using genuine currency.

These pieces were never intended to survive in collectors' hands. That any circulate in the numismatic market at all is largely a product of equipment disposal and workshop clearances after Siemens Nixdorf's 1990 merger and subsequent restructuring through the 1990s.