Originally Posted by
urloony
You might have a point if Alma didn't specifically state that the Nephite system was different.
"And the names are given by the Nephites, for they did not reckon after the manner of the Jews who were at Jerusalem; neither did they measure after the manner of the Jews; but they altered their reckoning and their measure, according to the minds and the circumstances of the people..."
Alma 11:4
Whether it's a fictional account or not, the text is very specific with regard to its monetary system and coins are never mentioned.