1790 2 Reales Silver Coin from Mexico, Bust of Carolus IIII, the initials a€?JHBa€ are impressed on portrait, on obverse crowned shield between two pillars, a€?Ma€ with a small a€?oa€ above it is the mint mark indicating the coin was made in Mexico City and a€?F.M.a€ are the initials of the engravers, unusual for "Carolus IIIIa€ to be spelled out with four Roman numeral ones (IIII), normally that would be a€?Carolus IVa€, with small hole for pendant