FORTIS pilot´s chronograph, self winding, reference 597.10.11, frosted stainless steel case including leather strap with original buckle, screwed down case back, mineral crystal, black contrast dial with tritium luminous numerals & hands, display hours, minutes, constant second, day, date & chronograph, 25 jewels, calibre ETA 7750, diameter approx. 40 mm, original box & papers, sold in April 1996, signs of use due to age, condition 2