A nickname used in Westphalia and the Rhine Provinces for the Prussian piece of two and one half Silbergroschen.
The small bust would account for the derivation of " Mannchen, " and the first part of the name is probably due to the fact that the majority of the coins were used to liquidate small payments in the state treasury. See Druttainer.
Source: Frey's Dictionary (American Journal of Numismatics, Vol. 50, 1916)