Watch List notes:

Mexico City, Mexico, cob 1/2 real, (1)657/6(P), rare.S-M19; KM-unl; Cal-unl.1.26 grams.VF with bold final three digits and clear overdate (this being only the second example we have offered), strong cross details, irregularly shaped planchet with small edge crack as made.From: Shield Type
($125-200)