A. Lange & Söhne A SILVER OPEN-FACED SWEEP SECONDS POCKET CHRONOMETER WITH DECK BOX CIRCA 1925 NO 81799 • gilt three-quarters plate pivoted detent escapement, bi-metallic two armed Guillaume balance, spiral blued steel spring, precision regulator, engraved balance cock, diamond endstone, silver cuvette • silvered matte dial, Roman numerals • engine-turned Jürgens case • case, dial, cuvette and movement signed, dial and movement numbered • fitted within an unusual mahogany triple-hinged deck box diameter 62 mm
A. Lange & Söhne A SILVER OPEN-FACED SWEEP SECONDS POCKET CHRONOMETER WITH DECK BOX CIRCA 1925 NO 81799 • gilt three-quarters plate pivoted detent escapement, bi-metallic two armed Guillaume balance, spiral blued steel spring, precision regulator, engraved balance cock, diamond endstone, silver cuvette • silvered matte dial, Roman numerals • engine-turned Jürgens case • case, dial, cuvette and movement signed, dial and movement numbered • fitted within an unusual mahogany triple-hinged deck box diameter 62 mm
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