OMEGA Speedmaster Professional Mark II gents- chronograph in steel, Switzerland around 1969, manual winding, screwed down case reference 145.014, original stainless steel bracelet reference 1171, black dial with luminous indices, original luminous hands, mineral glass with tachometer graduation, pink gilded movement calibre 861, 17 jewels, precision adjustment, 3 additional elements enclosed, diameter approx. 41 mm, length approx. 20 cm, condition 2, property of a collector