Watches and Wristwatches / Universal Genève. A stainless steel manual wind calendar chronograph with moon phase Tri-Compax, Ref 22279, Circa 1940
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The Tri-Compax was launched at Baselworld in the early 1940's and was produced up until the 1980s in many different variations. The name Tri-Compax refers to the three complications: the moon-phase, chronograph, and complete calendar.