Poor man's Breitling Top Time . More on Intersport here, for those who are interested http://www.intersport-nederland.nl/about-us/history/ They were the official sports store of the 1972 Olympics, and I think this 38mm NOS charmer was made in commemoration of that, possibly as a one-off.
To restore case imprinted markings and handset or not? I'm less bothered by the tachy markings than by the lumeless hands.