Universal Aero-Compax ref 22414, a stainless steel chronograph wristwatch with dual time zone, circa 1949. Dial: silvered, additional engine-turned time-zone dial at 12. Calibre: cal. 287 manual winding, 17 jewels. Case: stainless steel brushed and polished round, snap-on back. Case number: 1487180. Closure: black leather strap. Dimensions: 37 mm diameter. Accessories: none. The Aero-Compax was first introduced in the 1940s by Universal at the time of the Second World War., a watch for collectors, this piece offers more than chronograph capabilities as it houses a unique patented complication, namely a second time display at noon. This reminder dial has independent hour and minute hands which the wearer sets by the crown at 9 to register a specific time. This could be used in military operations or to keep a specific time as a reference. The three other subsidiary dials show the constant seconds and chronograph registers.