This is a "Speedy" Moth. The only GRP moth series ever built in Germany by the yard "Primaboot" located in Aachen. Judging by the sailno. the boat was built in the late 70s early 80s.
I tried one once. there are FAR better Moths... and have ever been. If you think that this design is as young as the Womble III or Magnum Mk2 design. We were a bit behind, even in those days..