Watch List notes:

Mexico City, Mexico, aluminum pattern 100 pesos, 1991, Huitzilapan, rare, NGC MS 61. KM-Pn246. Quite lustrous but scratched (soft metal), from a reported mintage of just six pieces (according to KM), but considering the NGC census shows seven entries (plus one more at PCGS), a higher population is likely. NGC #4767210-001.
($300-$450)