Goal: Identify the coin in question and learn why it is apparently underweight.
Background: Purchased while on vacation in the Caribbean about 1997, thus I highly suspect this may not be authentic.
Evidence: Coin is similar to Mexican 4 Reales of Philipe III (1607-1621)
Size is aapproximately 1.10” x 0.95” or 28mm x 24mm
Weight is 136.6 grains or 8.85 grams
Certificate appears authentic, but has several errors in transcription.
Any input is appreciated. Thanks.
Link to similar coin in files https://en.numista.com/catalogue/pieces14995.html
Link to similar certificate http://www.newworldtreasures.com/images/maravillascoa.jpg
