Vintage circa 1986-1990 Geha Style 714 cartridge fountain store pen, Made in Germany stainless steel finish

The style 714 was made only from 1986-1990 by Geha store of Germany a company that got into the business of making fountain pens in 1950. This pen though incorporates all they learned over the years including a reserve function to the cartridge that could be flipped around when the first one was empty. Nice stainless steel finish. Sold as found but dont see any reason it shouldn't work.