1 Duit

West Friesland's duit production in this period was part of the notoriously decentralized Dutch provincial coinage system, where seven sovereign provinces each maintained minting rights and frequently undercut one another on fineness and weight. The Westfrisian issues of 1779–1780 coincided with the Fourth Anglo-Dutch War's approach — hostilities formally began in 1780 — which would devastate Dutch trade and strain provincial finances for years afterward.

The duit was the workhorse of small commerce in the Dutch colonial trade, shipped in bulk to the VOC's Asian settlements where chronic small-change shortages made even worn provincial coppers acceptable currency.