Bopearachchi does not account for the dating of Plato s coins in his encyclopaedia and accordingly gives Antimachus II a later reign This is a rare lapsus in his very extensive work but a lapsus it is he simply interprets the dating as an additional monogram without further discussion A description of a monogram of Plato is found here though the coin referred to there is from 166 BCE The article on the tax receipt is published after Bopearachchi s work and strongly indicateds that Antimachus II was the son of Antimachus I Therefore a close succession is very logical and thus the altered reign 172 167 keeping the estimate of five years done by Bopearachchi