A mid 20th Century two-day marine chronometer, the silvered dial signed and numbered THOMAS MERCER LTD. ST. ALBANS. ENGLAND 18104, Roman hour numerals, up-and-down and subsidiary seconds dial, blued steel hands, Earnshaw escapement, Mercer flat steel strip detent to side of banking block, cut bi-metallic balance, palladium helical balance spring, circular heat compensation weight, brass bowl and gimbal ring in 2-tier mahogany box with silvered brass to front of top section inscribed SOLD BY MARITIME STORES LTD. MIDDLESBOROUGH NO. 18104 -- 7in. (17.8cm.) wide