 Based on his identification of the symbols on the punch-marked coins with certain Mauryan rulers, Kosambi argued that the Mauryan punch-marked "Karshapana" after Chandragupta has the same weight as its predecessor, but much more copper, cruder fabric, and such a large variation in weight that the manufacture must have been hasty.This evidence of stress and unsatisfied currency demand is accompanied by debasement (inflation) plus vanishing of the reverse marks which denoted the ancient trade guilds.This in his opinion indicated that there was a fiscal crisis in the later Mauryan period.