1 pound troy = 2 marks. 1 mark = 8 oz. 1 oz. = 20 engels. 1 engel = 32 azen. So that 160 engels or 5120 azen made up the mark.
In reckoning the standard or alloy, the weight system was—
For silver—1 mark = 12 pfennige or deniers. For silver—1 mark = 288 grs. (12 x 24). For gold—1 mark = 24 carats. For gold—1 mark = 288 grs. (24 x 12).
Although forming part of the Holy Roman Empire (being included in the Burgundian Circle), the Mint system of the Empire has apparently never obtained in the Netherlands. The Counts of Holland, from the days of Floris II. and Jan I. ( i.e. from 1256 onwards) have minted on their own account, as have also the Counts of Flanders from a much more remote date. The silver deniers of the Counts of Flanders date from at least the days of Count Arnold II. (964-989). The introduction of "la grosse monnaie" (whence gros and groots), in imitation of the French money, dates from the reign of Marguerite, Countess of Flanders (1244-1280), or possibly earlier; and the gold coinage ( royaux