6 (sex) Daler Kopparmynt

Riksens Ständers Wäxel-Banco — the Estates of the Realm Exchange Bank — was the world's first central bank, founded in Stockholm in 1668 after the catastrophic collapse of Johan Palmstruch's Stockholms Banco, whose own notes had become the first banknotes issued in Europe. This 6 Daler Kopparmynt note belongs to the bank's mid-18th century series, denominated in copper money at a time when Sweden's monetary system was notoriously cumbersome: copper plate money (plåtmynt) could weigh several kilograms for larger values.

The kopparmynt denominations were effectively a paper substitute for that unwieldy coinage. Each note was hand-signed and numbered at the time of issue — authentication by hand rather than mechanical security feature.