Georgian 'Mercantile' Disc Weight
Copper-alloy, 115 grams, 35.59 mm. 18th century AD. A cast disc weight with a recessed upper surface. The recess bears four stamps: a vertical sword for London; a capital A for the avoidupois weight system; a ewer as an assay mark; a crowned 'G' for King George. Reference: cf. disc weights in Biggs, N. & Withers, P. Lead Weights: The David Rogers Collection, Llanfyllin, 2000. Good very fine condition. Provenance: from an old English collection.