A Certina Certronic tuning fork watch with calendar at 3 in stainless steel, Movement N° 8926494, Caliber 29-151, ESA 9162, with black leather band.. Signed front: ”Certina, Certronic”, inside: ”Certina, Certronic, 29-151, unadjusted”, back: ”8101 001, 8926494”.
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