Sinn 157

SINN chronograph reference 157, self winding, Switzerland/Germany around 1990, stainless steel case including neutral leather strap, screwed down case back and winding crown, black dial with tritium-luminous indices, luminous hands, display of hours, minutes, constant second, day, date, 24-hour and chronograph, rhodium plated movement calibre Lemania 5100, 17 jewel, diameter approx. 40 mm, overhaul recommended at buyer's expense, condition 2-3