Watch List notes:

Potosi, Bolivia, cob 4 reales, 1746q. S-P50; KM-30a; CT-1132. 13.59 grams. Somewhat chunky and crude but with bold full assayer and date (the 6 and 7 curiously double-punched), two bold full denominations, full but off-center cross, lightly toned AVF.
($125-200)