Cop. 7341 R6, Gum. 650, Dutkowski 85 R7, Tyszkiewicz 175 marks in gold, gold, weight 3.52 g., end of reverse legend GEDANENS, listed in the public collection at the National Museum in Warsaw, and in numismatic cabinets in Vienna and Berlin. According to Marek Kaleniecki, this extremely rare variety of ducat did not appear at any public numismatic auction after World War II. An old notation on the envelope made by the owner's hand reads similarly, "Actually not listed anywhere." Mint mirror all over!!!, on av in places old patina, in places traces of removal of patina-rusts!!!, reverse without defects, very rare coin from St. Niewitecki's collection, original envelope preserved.
