In Cologne and the duchy of Mecklenburg-Schwerin, 19ᵗʰ century, a unit of mass, = 3.5 milligrams.
However, this unit was in use for centuries before, and over a very wide area, at about 3.57 milligrams.
According to Doursther, in Darmstadt in the 19ᵗʰ century the Richtpfenning was ¹⁄₂₅₆ Marc, the same as a Pfennig. This may explain why diminutives (“teil”, “chen”) were often used with this term.
Richtpfennig(teil[chen]), deutsches Gold-, Silber-, Münz- u. Probiergewicht = ¹⁄₆₅ ₅₃₆ Mark (s. Mark, A, a, α ; b, I, α; c, I α und II; s. auch Richtteil).
Richtpfennig, Richtpfennigteil, Richtpfennigteilchen, German gold, silver, monetary and assay weight = ¹⁄₆₅ ₅₃₆ Mark [the rest is references to various entries for the Marc in Jansen]
Jansen (1900), page xxx.
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Last revised: 8 June 2002.