What is a greek scruple coin?

A scruple is not a coin, but a weight. And the Word is not Greek, but Latin in origin. The Word scruple comes from a Latin Word meaning sharp pebble, and this is true of both the English Word for a weight and the Word for a moral consideration.

As a weight, a scruple is in the apothecaries' series of the English system, and is one third part of a apothecaries' dram. The Word dram comes from the Greek Word drachma, which was both a weight and a denomination of coinage. Perhaps it is from this connection that the idea came of its being a Greek coin.