I am trying (for the sake of nostalgia) to find one of the fountain pens I used to learn handwriting with in the early 1980s at school (in the UK). It was an all plastic affair, blue, full-sized and tapered I think. The cap was small and only covered the nib. I think that the nib was replaceable, and that the pen took the small, international size (?) cartridges - so that you could put one in and store another upside down in the end of the pen.
Does this ring any bells with anyone? Any ideas gratefully received! I may of course be wrong with any part of the description which may not help.
Mr B.