Ulysse Nardin Vintage Medical Chronograph.
My kind of stuff. Something I am desperately hunting for years, in vain, for the moment.
Here we have a 37 mm steel case, an enamel dial with cherry on the cake, a spanish wording, and a cal Valjoux 22 inside.
Not sure about the hands, though, but it is hard to compare with documents or another watch.
Credit picture: Christies.
From 1941, according to Christies.