Theorein Silverstone bicompax chronograph wristwatch

in steel and yellow gold, ref. 5100, 40 mm case. black dial with fluorescent indexes and hands, three golden auxiliary dials for the chronograph, date display at 3 o'clock, screw pushers, sapphire crystal, mechanical movement with automatic winding, Lemania 5000 calibre, strap with golden metal buckle, signed case, dial and movement, complete with box