Nivada Aquamatic
From Chronopedia
Nivada Aquamatic
Waterproof AND an automatic. the Aquamatic was quite something in the 1950s. the 360EL indicates a full 360 degree rotation of the movement rotor, unlike lesser bumper movements of the time. The early models had a caseback held by 4 screws but the company moved to screwback cases in line with its other more popular model, The Antarctic.