J.R. Arnold, Chas. Frodsham, a chronometer pocket watch movement, No.6425, circa 1850, white enamel dial signed Arnold, 84 Strand, London, 6425, Roman numerals, subsidiary seconds, frosted gilt fusee movement signed C. Frodsham, 84 Strand, London, 6425, free sprung bi-metallic balance, blued steel helical spring, diamond endstone, spring detent escapement, the whole mounted in a later cylindrical glazed brass case, diameter of dial 45mm. approx.