I recently acquired this 1845 2 Reales coin and thought that it was KM 526.1. It is not large enough to be a KM 526.1. It only weighs 2.8 grams, is 18 mm wide and is 1 mm thick. It is very worn, but no way it could be 6.77 grams. Any help would be appreciated to find out what this coin is.


I can make out a crowned M and CL for the mint info.