Potosi, Bolivia, cob 8 reales, 1626 P, quadrants of cross transposed, very rare. S-P23; KM-19a; Cal-1445. 26.64 grams. Broad flan with bold full P-dot-P and denomination o-VIII flanking nice full shield, full but partially flat shield with mid-1620s "flat" lions and full but weak 6 of date (not 100% certain), lightly toned AXF.
Estimate: 400 - 600 USD