MEXICO. 8 Escudos, 1756-MoMM. Ferdinand VI (1746-59). NGC AU-55.Fr-17; KM-151. Attractively detailed for the grade with remnant luster within the legends and a blend of marks in the fields that is at the low end of what can be expected for the grade. As a date, rarely seen finer, as truly unimpaired uncirculated examples, if they exist, never make it to auction.NGC AU-55.