JACOBUS
, a gold coin, worth 25 shillings; so called from king James the first of England, in whose reign it was struck. They distinguished two kinds of the Jacobus, the old and the new; the former valued at 25 shillings, weighing 6 dwts 10 grs; the latter, called also Carolus, valued at 23 shillings, and weighing 5 dwts 20 grains.