CHRONOSWISS skeletonized chronograph model Opus, Switzerland around 2000, self winding, reference CH 7523, stainless steel case including original leather strap with original deployant clasp, on both sides glazed, screwed down case back, blued steel hands, display of hours, minutes, constant second, date & chronograph, fine refined glazed movement, complete skeletonized, calibre 741S, diameter approx. 38 mm, original box & papers, signs of use due to age, condition 2