HANHART rare Flyback-chronograph, Germany 1950´s, manual winding, gold-plated metal case,...

HANHART rare Flyback-chronograph, Germany 1950´s, manual winding, gold-plated metal case, screwed down case back (thread defect/signs of use), bidirectional revolving bezel with 60-minutes graduation, silvered, engine-turned duoton-dial, display of hours, minutes, sweep seconds (Flyback) and date, 17 jewels, calibre 120, flat rim balance, flat hairspring, shock-absorber, diameter approx. 35 mm, signs of use due to age, condition movement 2, condition case 2-3, property of a collector