OMEGA Speedmaster Professional reference 145.022-68 rare gents wristwatch with chronograph in steel, Switzerland around 1968, manual winding, screwed down case, black tachometer bezel, original glass, black, very nice patinated stepped dial with raised Omega-sign, luminous indexes, white original hands, red-gold plated movement calibre 861, 17 jewels, precision adjustment, enclosed original Omega-box, diameter approx. 42 mm, condition 2-3, property of a collector