Watch List notes:

Potosi, Bolivia, cob 8 reales, (1)634T, rare, debased and underweight. S-P26; KM-19a; CT-476. 18.34 grams. This is a fascinating piece, as it is choice in many ways (full shield and cross, bold date and assayer, VF+ with spotty toning), yet at about 18-1/3 grams it is so underweight (without any clipping or corrosion to account for it) that the only explanation is that this coin was a fraud in its time, in fact exactly the type of coin that was supposed to be recalled and melted in 1649-52. ($300-450)