tarn disk, copper	a unit of currency.
tarn disk, gold:	a unit of currency, of the highest value on Gor; also made in double- weight; many cities on Gor mint their own money, but the gold tarn disk of Ar is the standard for much of Gor.
tarsk	copper coin that is the whole coin of least value, equalling 10 tarsk bits.
tarsk, silver	a coin worth 100 copper tarsks
tarsk bit	a copper coin worth from 1/10 to 1/4 of a copper tarsk, depending on the city which mints the coin.