OMEGA gents wristwatch Constellation Megaquartz f2,4 MHz, Switzerland around 1974, reference 196.0013, solid stainless steel case including bracelet, case back screwed-down 4-times, lavish Aventurine-dial with starry sky effect, display of hours, minutes, sweep seconds & date, quartz-controlled analog display, movement copper coloured, calibre 1510, measures approx. 49 x 33 mm, height approx. 13 mm, length approx. 19,5 cm, signs of use due to age, condition 2-3, literature 'Reise durch die Zeit' side 375 written by Marco Richon