Velddaalder
A term used by Dutch numismatists to indicate a coin struck dur- ing the course of a campaign and corre- sponding to the German " Feldthaler. " It is also used to describe obsidional issues, e.g.. the klippe of forty Sols of Breda, 1577, etc.
Source: Frey's Dictionary (American Journal of Numismatics, Vol. 50, 1916)