Cnapcock Publique Deposited
The name given to the half gold florin struck at Nimegue, Groningen, etc., at the beginning of the sixteenth century. The obverse bears a figure of St. Stephen or St. Martin.
The German equivalent is Knackkuchen, and all of these terms mean a brittle cake or as we would call it, a cracker. The nickname was bestowed on the coin from the reverse design which resembled a cake in common use.
- Frey's Dictionary (American Journal of Numismatics, Vol. 50, 1916)