The Cologne Mark
was a unit of weight equivalent to 233.856 grams
. It was introduced by the Danish King Hans
in the late 15th century and was used as a standard for weighing metals. It came to be used as the base unit for a number of currency standards, including the Lübeck monetary system, which was important in northern Europe in the late Middle Ages
, and the coinage systems of the Holy Roman Empire
, most significantly the conventionsthaler
, which was defined as one tenth of a Cologne Mark.
The Mark was defined as half a Pfund (pound) with 16 Unze (ounces) to the Pfund. The Unze was subdivided into 2 Lot, 8 Quentchen, 32 Pfennig or 36 Gran, with the Gran equal to 0.821 grams. (Inconsistency: 233.856/8/36 = 0.812 not 0.821; is the Gran 0.812 grams (for a mark of 233.856 grams as claimed) or (for the gran of 0.821 grams) is the mark 236.448 grams ?)