A George II silver tumbler cup, by Charles Chesterman I, the polished silver cup with London hallmark for 1754 and maker’s mark to the base, with initials ‘IG’ beneath trefoil coronets below the rim, height 5.3cm, weight 1.8oz. £200-300

See Arthur G. Grimwade, London Goldsmiths’, published by FABER, page 32, No 292.