1600
Copper alloy weight, possibly for an apothecary. It is circular, 18mm diameter and 3.5mm thick, but with a rising central knob the head of which is 9mm diameter and giving the whole object an overall height of 10mm. The present weight is 0.2460 troy ounces: this is therefore probably meant for an assay weight of a quarter ounce, and is likely to be 17th century or later. The shape of the weight resembles that of the miniature weights used with scientific balance scales.
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