A burr walnut and brass inlaid Hertfordshire Mercer mantel chronometer, the plinth-form case on adjustable bun feet, moulded base, glazed sides and top with spirit level (damaged), glazed brass bezel to the engraved silvered Roman dial signed Hardy Bros. 32 Old Burlington St. London W1, fine blued spade hands, subsidiary seconds ring below XII numbered 659, balance arrest lever between XII and I, up-and-down dial (0-8) above XI and engraved 8 day chronometer, auxilliary compensation, the single chain fusee gilt movement with maintainting power and unusual double-screwed baluster pillars, the spotted platform having palladium helical spring to the cut bi-metallic balance with circular compensation weights to the Earnshaw escapement