from the GNU version of the Collaborative International Dictionary of English
- n. a gold coin of the time of James V. of Scotland, the king's head on which wears a bonnet.
from The Century Dictionary and Cyclopedia
- n. A Scotch gold coin first issued in 1539 by James V. of Scotland, weighing about 88½ grains, and worth at the time of issue 40s. Scotch. Also called braid-bonnet.
Sorry, no etymologies found.