1 Groschen - Frederick Ulrich Kipper

Frederick Ulrich's 1620 groschen falls squarely within the Kipper und Wipper period — one of the most deliberate currency debasements in German history, in which dozens of petty states raced to mint coins at fractional silver content while passing them off at face value. Brunswick-Wolfenbüttel participated enthusiastically. Mints operated at a frantic pace between roughly 1619 and 1622, exploiting the monetary chaos of the early Thirty Years' War.

Frederick Ulrich himself was by most accounts a weak ruler, and the Kipper coinage issued under his name reflects administrative opportunism more than ducal policy.