AERO WATCH open face pocket watch with chronograph & moon phase/date, Switzerland around 1985, gold plated case, snap on case back & bezel, correction for moon phase at 9, silvered dial with tachymeter-scale, date at 6, moon phase at 12, gilded hands, rhodium plated movement calibre Valjoux 7734, 17 jewels, gold plated chain enclosed, diameter approx. 45 mm, length approx. 33 cm, condition 2