Grain (unit) weight) refers to those things measured by the lesser but quicker balances: the bismar or uncel, the Roman balance, and the steelyard. The original mercantile pound of 25 shillings or 15 (tower) ounces was displaced by variously the pound of the Hanseatic League (16 tower ounces) and by the pound of the then-important wool trade (16 ounces of 437 grains). A new pound of grains was inadvertently created as 16 troy ounces, referring to the new troy rather than the old troy. Eventually, the wool pound won out. The avoirdupois pound was defined in prototype, rated as to grains. In
Anglo-Saxon pound troy pound of 367.5 g. This pound of 12 ounces was in use in Troyes (Champagne fairs) where the mark of 8 ounces (also the Paris mark) weighed 245 g. The medieval troy pound weighed 240 pennyweights of 1.53 g or 24 medieval troy grains ( of the new pound and heavier than the real barleycorn). The Tower pound remained in use for weighing gold and silver until 1527. Anglo-Saxon pound The pound was a unit of account in Anglo-Saxon England, equal to 240 silver pennies and equivalent to one pound weight of silver. According to the Daily Telegraph it