NIVADA. A MEN'S STAINLESS STEEL CHRONOGRAPH AVIATOR/DIVER WRISTWATCH Model: Chronomaster Date: Circa 1970's Case reference: 3730 Movement: Signed, 17-Jewels, Cal.23 Dial: Signed, black, applied luminous hour markers,outer minute division, white outer Tachymetre, white stick hands with luminous insert, red centre seconds hand for chronograph with luminous insert, subsidiary dial for chronograph's minutes with red 5 minutes division, subsidiary dial for seconds at the 9 o'clock position Case: Signed, polished stainless steel, bi-directional black bezel with silvered division up to 155, screw down back, No. 85004 Strap: Generic black, stainless steel buckle Size: 38.5mm