Noun
guldengroschen (plural guldengroschens)
(money, historical) A silver German coin that was worth one gold gulden in the 15th century and two thirds of a taler in the 17th century.
In 1474 a convert lira was issued but it was in 1484 that Archduke Sigismund of Tirol issued the first truly revolutionary silver coin, the half Guldengroschen of roughly convert. Source: Internet
These Guldengroschen are reduced in weight to 29.2 g so as to be minted at eight coins to the Cologne mark. Source: Internet
The Guldengroschen, nicknamed the guldiner, was an instant and unqualified success. Source: Internet