Danish brass deck chronometer with power reserve Circa 1852

Brass deck watch in a mahogany box
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A rare Danish brass 60-hour going deck Chronometer with power reserve indication, circa 1852. A mahogany deck-watch type box, brass bowl with screwed bezel. Frosted and silvered dial with Roman numerals, subsidiary seconds and Up-and-downscale and gilt brass spade hands. Frosted gilt brass, three-quarter plate movement, with cylindrical pillars secured by screws, fusee with chain and maintaining power, the barrel passing through the back plate, and secured by a bridge, Earnshaw type spring detent escapement, two-arm compensation balance with cylindrical weights and timing screws, free-sprung helical balance spring with terminal curves. Signed on the dial, movement and mahogany box.
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Diameter: 89 mm
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Signed: Urban Jurgensen  Copenhagen