^Lot 783 Potosi, Bolivia, cob 8 reales, (1629) T, denomination 8, heavy-dot borders, reverse legend rotated 9

Potosi, Bolivia, cob 8 reales, (1629) T, denomination 8, heavy-dot borders, reverse legend rotated 90 degrees, NGC VF details / saltwater damage. S-P26; KM-19a; Cal-1454. 26.90 grams. Uneven flan with clear 162 of date at 1 to 2 o'clock outside of full but weak cross, full shield with clear dot-P-dot-T-dot to left and dot-8 to right inside king's name and ordinal PHILIPVS IIII, toned in crevices. It appears the weakness on the cross was misinterpreted by NGC as corrosion from shipwreck salvage, which this is not.
Please use this link to verify the certification number