JACOBUS, a gold coin, worth 25 shillings; so
called from King James I. of England, in whose reign
it was struck. See COIN.
We usually distinguish two kinds of Jacobus, the old
and the new; the former valued at 25 shillings, weigh-
ing six penny-weights ten grains; the latter, called also
Carolus, valued at 23 shillings, in weight five penny-
weights twenty grains.