Seville, Spain, cob 8 reales, 1638 R. Cal-1652; KM-unl (80 for type). 26.60 grams. Full date above mostly flat cross with odd arcuate hammer-mark in center (as made), nearly full shield with clear S-R to left above king's ordinal IIII, Fine+ with contrasting sediment in crevices.
Estimate: 250 - 375 USD