Watch List notes:

Argentina (River Plate Provinces), Potosi mint, 1/2 real, 1815F, NGC MS 64+, top pop at NGC. Janson-17.1.1; KM-1.2. Very bold strike with deep toning over lustrous surfaces, hint of die-clash, no marks or wear, finest known in NGC census (tied with two others at this grade but with "plus" designation). NGC #4740639-002.

Estimate: $1000-1500