Original A Johannsen 2-day Marine Chronometer Clock No.9043 – Chain Fusee Box & Key

Original A Johannsen 2-day Marine Chronometer Clock No.9043 – Chain Fusee Box & Key

Extremely good chronometer

Military government broad arrow on the box and dial

Inner and outer box

Silvered dial

Serving ships had at least 3 of these sometime up to 7

2-Day movement

Earnshaws detent escapement

compensation balance

steel helical spring

Blued steel hands.

Original mahogany case

I was told this served on a military vessel

Dial is signed A Johannsen & Co Makers to the Admiralty

Lockable case

Working order

Measures 48cm high by 28cm wide & 18cm deep

A very fine & historically fascinating mahogany and brass-lined Royal Observatory two-day marine chronometer.

DIAL The 101mm. silvered engraved brass dial has Roman chapters with outer minute track, blued steel hands, the centre is signed A. Johannsen & Co. MAKERS TO THE ADMIRALTY, THE INDIAN GOVt. & ROYAL NAVIES OF Italy, Spain& Portugal. 149 Minories, London. With up-and-down sector beneath XII calibrated 0-48 and seconds ring at VI engraved with the Government Broad Arrow and serial number 9043, both with blued steel hands.

MOVEMENT The full-plate movement has well spotted plates with four ring-turned pillars secured with blued steel screws at the top plate which is further engraved with the Government Broad Arrow and serial number 7568, chain fusee and spring barrel, the escapement with cut bimetallic balance with circular heat compensation weights, palladium helical balance spring and Earnshaw-type spring detent escapement with jewelled locking stone.

JOHANNSEN & Co. TWO DAYS 9043 with the Government Broad Arrow, recessed brass drop handles to the sides. Original numbered tipsy winding key ASMUS JOHANNSEN Danish born Asmus Johannsen is recorded in Watchmakers & Clockmakers of the World, Volume 2, (Brian Loomes) as working in London from 1863-9. He is also listed in Chronometer Makers of the World (Tony Mercer) as a great maker supplying other makers. He worked from various addresses in London from 1859 before finally moving to 149 Minories in 1865. The firm continued in business until 1937.

Outer box has signs of use lid from inner box missing chronometer working well