Set of 2 early aviation-wristwatches, Switzerland around 1935, chrome-plated nickel case strong damaged, formerly black dials with Arabic luminous numerals, 1. MIMO AVIA antimagnetic, screwed down case, turning bezel, silvered movement with 15 jewels, diameter approx. 35 mm, second Helvetia, large hinge case, silvered movement with early shock-protection, diameter approx. 41 mm, condition 4