Mercantile Pound (lb merc)
Mercantile Pound (lb merc) :
A historic English unit of weight, the mercantile pound (libra mercatoria) was the commercial predecessor of the avoirdupois pound [1]. Used from about 1100 to 1300, the mercantile pound contained 15 troyounces [2] or 7200 grains. This is equivalent to about 1.0286 avoirdupois pounds or 466.55 grams
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