A fine two-day marine chronometer in its original coromandel box by this well-known firm, with signed silvered and engraved dial with seconds and up-and-down subsidiary rings and original tapering gold hands. The refined four pillar fusée movement has a spring-detent escapement, helical spring and split compensated bimetallic balance with diamond end-stone. The 4 inch dial is signed Joseph Sewill 61 South Castle St. Liverpool. Maker to the Admiralty. across the centre. Flanking either side of the up/down dial are engraved crests for Prize Medal Awards in 1867 and International Exhibition 1862. There is an original brass gimbal mounting which secures the movement to the case. 

The high quality brass bound figured coromandel box is in three tiers with a glazed viewing chamber and is in fine original condition. There is also an original inset brass carrying handle to each side. The case is numbered 5206 on an original ivory plaque and the number is repeated in the centre of the silvered brass subsidiary seconds dial. 

Height: 7 ⅞ in (19.75 cm) 
Width: 7 ⅛ in (18 cm) 
Depth: 7 ¼ in (18.25 cm) 

* The firm of Joseph Sewill were flourishing watch, chronometer and sextant makers working at 61 Castle Street, Liverpool from 1845 until 1937. They are listed on page 236 of Tony Mercer’s ‘Chronometer Makers of the World’.