A Two-Day Marine Chronometer with Electrical Contacts, the matt silvered dial signed and numbered Glashutte 11839, Roman hour numerals, yellow metal hour and minute hands, subsidiary seconds and up-and-down dials with blued steel hands, the top-plate with GUB mark, reversed fusee and barrel with fusee chain, Earnshaw escapement, flat spring detent to side of banking block, Guillaume cut bi-metallic balance with four same-size heat compensation weights, blued steel helical balance spring, 'one minute' electric impulse assembly to fourth wheel arbor with jewelled pallet to make/break impulse arm, brass bowl and gimbal in 2-tier mahogany box, with brass drop handles, glazed top and all brasswork finished with brass coloured laquer. Dial diameter - 4in (10.4 cm)