Frederik V's Coins from Oldenburg

In large parts of Europe, the Seven Years' War led to unstable conditions of coinage and relatively poor coins being made – the Danish Kurantdukat is one of many examples.

The monetary developments were especially chaotic in Germany, and Oldenburg, among other places, was flooded with poor wartime coins. Because of this situation, Oldenburg wanted to hire an assayer and later establish a mint, so that they at least locally could conduct a more stable coin policy.

The wishes of Oldenburg meant that Johan Henrik Madelung, who later became moneyer in Kongsberg, was sent to Oldenburg to carry out both the assayer assignments (such as valuation) and the coinage at a small newly-established mint.

A number of small coins were minted, from the 2 Pfennig to the 2 Mariengroschen, as well as larger coins in the shape of 1/12-2/3 Thalers. However, production was not successful, and the Thaler mintage, for instance, resulted in losses. Due to these losses, and because of political developments, the mint was closed in 1765. You can read more about the coins from this period in the book Kurantmønten 1726-1788 by J. Wilcke.