Watch List notes:

Mexico City, Mexico, cob 1 real, Philip II, assayer F below mintmark oM to left, o to right, very rare. S-M12; KM-unl (26 for type); CT-unl (cf 641). 3.28 grams. Full cross and shield and crown in the style of the end of Philip II (time of the F-oD issues), with clear oMF to left and bold o to right (the only example we can trace), About Fine with slightly patchy toning.

Estimate: $100-150