Description

An early 20^th Century English two day marine chronometer by Kullberg in a mahogany box.  Full plate spotted keywind reverse fusee movement, four turned pillars secured by blue steel screws.  Harrison's maintaining power with steel click and blue steel spring. Polished steel barrel ratchet wheel and double toothed click on the spotted barrel bridge.  Spotted cock with diamond endstone.  Auxiliary compensation to the two arm compensation balance with two circular weights, small timing screws and large timing nuts, freesprung invar helical hairspring.  Earnshaw spring detent escapement, escape pivots with endstones.  The movement secured to the gilt dial plate by three blue steel screws.  Engraved signed and numbered silvered brass dial with broad ministry arrow above “I”, details of medals awarded and countries supplied.  Subsidiaries for seconds and power reserve indication, Roman numerals, blue steel hands.  Turned brass bowl, rotating shutter to the winding hole, screw brass bezel with flat glass.  Brass gimbals and locking mechanism, brass ratchet key.  Three tier mahogany box, hinged flush brass handles replaced, top lid.  Signed, numbered and dated rectangular bone plaque.