LOWENTHAL MONOPUSHER CHRONOGRAPH "4T", 30S Case: three-body in chromed metal, hinged caseback marked Brevet, olive monopusher. Bracelet/Strap: not original. Dial: signed, silvered, two-tone finishing, sector bâton indexes and Arabic numerals, subsidiary dials for seconds and 30-min register, snail tachymeter and outer telemetric graduations, sword hands. Movement: manual-winding Landeron/Hanh caliber, column wheel, monometallic balance with screws, flat hairspring. Accessories: – Diameter Ø: 39 mm Note: working, but a servicing is suggested.