Also, while I was looking up the Wikipedia pages for this, I decided to revamp the Reich’s early currency. Most of these names are from long after the 11th century, so I’ll just say Wilhelm introduced them through Friedrich the Great. So here are the denominations:
Pfennig: Basic and only unit of silver currency in the 11th-12th centuries. Starting from the later years of Saint Wilhelmina’s reign, new denominations were introduced to standardize currency values across the Reich. Eventually becomes the “cent” denomination in the 21st century.
Groschen: Silver coin starting in Saint Wilhelmina’s reign as the value of the pfennig was being inflated. Medieval value set at 4-6 pfennige. Modern value set at 10 pfennige. Eventually phased out as a denomination due to decimalization favoring the pfennig and thaler, though the name persists as a nickname for the 10 pfennige coin.
Thaler/Hyperpyron: Initially a gold coin introduced on the suggestion of Alexios Komnenos. Later currency reforms result in the creation of a silver coin, named thaler after its silver coming from the Joachimsthal mine, with its value equal to that of the hyperpyron. Medieval value set at 60-72 groschen. Modern value set at 100 pfennige.
Denominations for 5, 25, and 50 pfennige emerged in the early modern and modern era. The names in my previous post on this subject should still apply.