A stainless steel and gold automatic sweep seconds triple calendar wristwatch with moon phases, Gübelin,"Ipso-matic" circa 1950

14k, nickel lever movement, 25 jewels, mono-metallic compensation balance, two-tones silvered dial, yellow gold applied roman and baton numerals, inner ring for date, apertures for days of the week, month and moon phases, case with stainless steel snapped back, case, dial and movement signed.