1 Ducat - Adolf Fredrik Östra silverberget

These ducats were struck to pay shareholders of the Östra silverberget mining company in Salberget, a practice known as Bergwerksdukat — corporate dividends paid in coin rather than paper. Adolf Fredrik's reign saw renewed royal interest in rationalizing Swedish mine ownership, and the Salberget silver mines were among the properties brought under closer crown scrutiny during the early 1750s. The specific authorization to strike these pieces in the king's name gave them a quasi-official character that ordinary company scrip lacked.

Stockholm Mint production of this type was limited to the four-year window the mines operated under these particular arrangements.