A Scotch gold coin, struck by James III in his third coinage of 1486, and continued in the reigns of James IV and James V. Its weight was fifty-nine grains.
The name is derived from the design of a unicorn, having a crown around its neck from which hang a ring and chain, and supporting a shield of arms.
The legend on the reverse, EXVRGAT DE ET DISIPENT INIMICI, was copied on the Sov- ereign of James I of England, issued in 1603. See Alicorno.
Source: Frey's Dictionary (American Journal of Numismatics, Vol. 50, 1916)