Domesday Book Payments: Measurements: pensam - by tale ad pondus - by weight ad arsuram - in bullion Form: libra alba album argentum - pure silver in bullion nummi candidi - pure silver coin pound of silver weighed 12 ounces solidus - 12 pence, equal in weight to 3 shillings (1800) mark of silver was the Flemish or German mark, valued at 13s. 4d. or two-thirds of a pound.