@liana The go-to was Schaefer. I am no longer sure who makes fountain pens anymore. The least messy style would be a Schaefer cartridge pen. You inserted a small cartridge of ink into the body of the pen and screwed it back together. That would pierce a small hole at the bottom of the cartridge, which would allow the ink to flow into the paper. Prepare for the possibility of leaks. The "badge of shame" was the blue stain flowing on your white shirt from your shirt pocket.