Liege
Bishopric. Sede Vacante Patagon 1771 AU Details (Cleaned) NGC, KM171, Dav-1589. Nice, sharp details. Cleaned long ago but now with pleasing medium overall gray tone and some residual luster. Quite rare with a reported minting of only 150 pieces.
From the Engelen Collection of World Coinage
HID02901242017
Estimate: 800-1000 USD