"The Heller or Häller (German: [ˈhɛlɐ] (listen)), originally a German coin valued at half a pfennig, took its name from the city of Hall am Kocher (today Schwäbisch Hall).
Mints produced the coin from the beginning of the 13th century, based on a previously produced silver pfennig (Häller Pfennig, sometimes called Händelheller for its depiction of a hand on the front face), but its composition deteriorated with the mixing in copper little by little so that it was no longer considered to be a silver coin. There were red, white and black Hellers. Beginning in the Middle Ages it became a symbol of low worth, and a common German byword is "keinen (roten) Heller wert", lit.: not worth a (red) Heller, or "not worth a red cent"." - (en.wikipedia.org 19.02.2022)
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