Watch List notes:

Mexico City, Mexico, cob 8 reales, Charles II, assayer L, very rare error as struck from 4R dies (denomination visible). S-M21; KM-unl (46 for type); Cal-unl (Type 108). 27.03 grams. Typically rectangular flan with most of shield and cross but little else except for the all-important denomination 4 to right, lightly struck VF with peripheral flatness, no toning.
($200-300)