Universal, Tri-Compax, ref. 22258, steel chronograph watch with calendar and moon phases, 1950sMovement: cal. 481, mechanical, n°212375Case: n°946913, diam. 34 mmComponents: 2-counter chronograph with centre seconds, moon phases, tachymeter scale, aperture for day and month, date display, subsidiary counter for secondsUniversal strap: black crocodile leatherSignature: dial, movement, case