Watch List notes:

Mexico City, Mexico, gold bust 8 escudos, Charles III, 1780/70FF, unlisted overdate, NGC AU 53, finest and only example in NGC census.Cal-unl (196 for Type); KM-unl (Type 156.2).An apparent discovery piece, as no others with 8/7 in date have been recorded (here with clear diagonal of 7 inside the upper half of 8) in any reference or public sale, also rather decent for the type with lustrous reverse, light marks and wear on obverse, full rims.
($2500-5000)