The "Compax" was introduced in 1935, the world's first chronograph wristwatch with hour and minute registers, and which was particularly appreciated by members of the armed forces. The models were available in different case materials and forms, and a variety of dial layouts using the names 'Tri-Compax, Uni-Compax, and Aero-Compax'.

This wonderful example of a Tri-Compax shows Universal collectors and scholars alike, how a steel Compax case would have left the factory. Still retaining its polished and brushed finish surfaces, even retaining the facets to the inside of the lugs which were often lost over time with over-zealous polishing. The dial shows a warm ageing with crisp printing, making this particular example a must for collectors.