E J Dent, gold half hunter keyless pocket Chronometer, 18ct yellow gold, white Roman numeral dial, subsidary seconds at 9 O'clock, movement signed 'E J Dent, Watchmaker to the Queen, London', case and movement numbered 18325, case stamped with casemakers mark 'AN4 Adolphe Nicole' and London date letter 1852. Weight 81 grams, diameter 44 mm