TISSOT automatic chronograph series Navigator, Switzerland 1970′s, reference 45501, stainless steel case including original stainless steel bracelet with deployant clasp, screwed down case back, date, 60 minutes- & 12 hour-stop counter, calibre Lemania 1341, central rotor, flat rim balance, flat hairspring, length approx. 20,5 cm, diameter approx. 38 mm, signs of use due to age, condition 2-3, property of a collector