I like "coachbedford's" Mexican's call. If the coin weighs about 3.3 or 3.4 grams, I also like his call of a 1/2 real. Beyond that, I seem to see a "C" on the coin on the right (post #4) which may be part of Carlos II's monogram found on such coins--minted between 1668 and 1697.
Don.......