Argentina
Republic Real 1813 PTS-J AU Details (Cleaned) NGC, Potosi mint, KM2. Exceptionally difficult to locate outside of characteristically low grades, the noted cleaning appearing to have taken place long ago, with the surfaces still quite bright and retoned to a russet sunset in color.
From the Engelen Collection of World Coinage
HID02901242017
Estimate: 600-800 USD