It is very rare to find a watch of this kind in such perfect condition.The 1930s witnessed the birth of the Universal dual push-piece chronograph and the chronograph wristwatch with a 12- hour register which brought about a veritable revolution in the field of chronographic functions. This innovation was followed by the "Compur" range and in 1936 the "Compax".In the space of only a few years Universal developed a stunning succession of prestigious models: The "Uni-Compax" the "Dato-Compax" the "Medico-Compax" and in 1944 the year marking the Golden Anniversary of Universals foundation the "Tri-Compax" officially presented at the Basel Fair in 1944.