MINERVA WATERPROOF CHRONOGRAPH STEEL
Minerva, Suisse, "Incabloc", case No. 720388. Made in the 1940s.
Fine, stainless steel waterproof wristwatch with chronograph and registers.
Two-body, polished, stepped bezel, fluted concave lugs, screw-down caseback.
Silver with luminous arabic numerals, outer minutes and fifths of a second divisions,
outer tachometer scale, subsidiary seconds and 30-minute registers. Luminous hands.
14 ½ ```, rhodium plated, 17 jewels, straight-line lever escapement, monometallic
balance, Breguet balance spring, index regulator.