Watch List notes:

Potosi, Bolivia, cob 8 reales, 1745q, with P/q at bottom right (unique error). S-P50; KM-31a; CT-909. 27.17 grams. Squarish flan (chunky) with full cross and pillars-and-waves, the pillars side nicely aligned on a diagonal axis with the flan, AVF with toned fields, with very clear mintmark P punched over assayer q at bottom right, the first instance we have seen of this in over 25 years of studying Potosi cobs!
(250 - 500 USD)