Inspired by Sinn and 70's Guinand pilot chronographs this rare Helmut Sinn Jubilar Chronosport was produced in the 90's. And most likely after the Guinand brand and production facilities were purchased by Helmut Sinn. It is powered by a rotated Valjaux 7750, with the date at 6 o'clock and a nice decorated and signed rotor. It has a very good 40mm size, military style face with an awesome black dial, aged tritium hands and markers and a bi-directional, great looking bezel. 

This watch comes with a full service and 1 year warranty.