The M75 Go! was introduced in November 1992 by Pelikan as an economy fountain pen for youth but it is now discontinued.  They are larger pens with interesting turquoise or maroon trim.  Despite it’s somewhat odd appearance, these are well regarded writers for the most part.  There is also a similarly styled P71 Go! which was identical externally except for an extra colored “gill” but differed in that it was a cartridge pen.  The nibs of these pens are gold plated stainless steel.

Black-Turquoise

Black-Maroon