The text was just as important to add as the pic.
[h=1]Mexico 1772-Mo FM 1/2 real[/h]

from the Mountain Groan Collection
Shown is an 1772MoFM half real, one of a type struck 1772-84. The dates 1772-73 are distinguished from later issues by possessing inverted mintmark and assayers' initials on the reverse. The bust of Charles III was used until 1789 but later issues were of slightly lower fineness and are catalogued as a separate sub-type. Assayer FM is recorded for the years 1772-78. The half real, as one-sixteenth of a dollar, would have traded in the United States for 6½¢. Harris[SUP][1][/SUP] notes that the Mexico City half real is the only mint that can be called abundant for Charles III, the second mint, Potosi, is less than half as common.
Recorded mintage: unknown.