5 Rigsdaler Courant Blue paper, with anti-counterfeit text

Kurantbanken — formally the Banken for Danmark — was established in 1736 as Denmark's first note-issuing institution, but by the late eighteenth century it was already overextended, financing state expenditure well beyond its specie reserves. The distinctive blue paper used for this denomination was a deliberate security measure, one of several physical features introduced during this period as counterfeiting of Danish notes had become a serious and documented problem. The anti-counterfeiting text printed into the note's body was unusual for the era — most contemporaneous European issuers relied on engraved complexity rather than explicit textual warnings.

Kurantbanken collapsed in 1813 amid the fiscal catastrophe of the Napoleonic Wars, making this a product of the institution's final decades of solvency.