Trying To Identify This Latin American Merchant Token, No Luck So Far

This is a small (~19mm) copper 1 real token. It's not listed in the Rulau Latin American tokens book. I've also done an exhaustive google search, in both English and Spanish, with various combinations of the words on it and have come up with nothing. The fact that there is a San Juan in multiple countries complicates the matter further. The closest info I could find was a mine manager named Prout, but he was active in the South-west US during the early 1900's and I can't imagine such a token being related to that. Perhaps someone has or knows of some other references worth looking in? Any clues are much appreciated, thank you.