CITIZEN Record Master rare chronograph with flyback

CITIZEN Record Master rare chronograph with flyback in stainless steel, Japan around 1970, manual winding, reference 4-570017 Y, two- piece construction case, screwed down case back, Citizen bracelet with deployant clasp, black dial with tachymeter scale, applied luminous indices, luminous hands, date, stop function without counter, calibre 5702, 21 jewels, diameter approx. 36 mm, length approx. 19,5 cm, signs of use, date circuit has to be repaired, Citizen box enclosed, condition 2-3