Universal Tri-Compax 1960s chronograph ref. 222100-2. Stainless steel screw back case (with well legible reference and serial engraved) measures 35,5 mm. excluding the original signed crown. The awesome dial featuring the blue Tachymeter scale, full calendar, moonphases and 3 chronograph registers. Powered by the Cal. UG 281 manual winding movement.The watch is in overall mint conditions, unpolished, all functions are in order, feel free to ask for any further information and pictures you may need.