Watch List notes:

Potosi, Bolivia, cob 4 reales, 161(7)M, date at 1-2 o'clock, very rare mule with P-Q-M to left of shield.S-P19; KM-unl (9 for type); Cal-unl (Type 149).13.18 grams.Good full cross with bold 16 of date at upper right instead of upper left, nearly full shield (well detailed but softly struck) with clear P-Q-M to left (first clear example we have seen, and only the second overall as a previous one was interpreted as P-O-M), lightly toned Fine+.
($200-300)