4 Mark - Frederik IV

Frederik IV's later coinage coincided with his dramatic personal life upending Danish court politics — in 1721 he dissolved his morganic marriage to Elisabeth Helene von Vieregg following her death, then promptly married Anne Sophie Reventlow, whom he had kept as a de facto second wife for years. The Danish church and nobility were deeply unsettled. Coin production in these years continued through the Copenhagen mint under considerable institutional strain.

The .672 fineness places this squarely within the debased silver standard Denmark adopted earlier in the century, a deliberate fiscal measure rather than a minting irregularity.