This very rare vintage Universal 1950's uni-compax oversize 38 mm chronograph watch is in beautiful condition for its age. Oversize stainless steel screw back case. Power by a 17 Jewels manual wind movement, Caliber # 285. The original dial is in beautiful condition, signed 'Swiss' at 6 o'clock. The oversized case is in excellent condition and appears to have never been polished.