53x32mm
Another 531 speciality in the shape of “Speedstream”. Although it was heavy it was meant to give aerodynamic advances. No firm date for introduction, but 1982 seems about right for this particular version
53x32mm
Another 531 speciality in the shape of “Speedstream”. Although it was heavy it was meant to give aerodynamic advances. No firm date for introduction, but 1982 seems about right for this particular version