Watch List notes:

Potosi, Bolivia, cob 8 reales, (16)52E transitional Type IV, rare variety, ex-Mastalir collection. S-P37; KM-A20.4; CT-432. 21.45 grams. Full but weak and off-center pillar with full POTOSI, the shield side heavily pitted, some dark patches. This is the only example known of this exact die variety, according to Mastalir, one aspect of which is A/F to left of shield. Pedigreed to the Roberto Mastalir collection, #IV.1-A.ad2(1)1 in his book (page 95), with Herman Moro photo-certificate #PTD668. Recovered from: Capitana, sunk in 1654 off Chanduy, Ecuador ($125-200)