LONGINES rare 18k pink gold flyback intermediate wheel chronograph with calibre 30CH, Switzerland around 1957, manual winding, reference 7414-11, snap on case back and bezel, silvered dial with raised indexes restored/spotty/patinated, red telemeter-, blue tachometer-graduation, 30 minutes-counter at 3, constant second at 9, rhodium plated manufactory-movement, calibre 530, 18 jewels, glucydur-balance, Breguet-hairspring, beveled cadrature, diameter approx. 36 mm, overhaul recommended at buyer's expense, Longines box, condition 3, property of a collector