Cartridges

[socdad]

Is there a different cartridge used for a Jr Gent & Full Gentleman fountain pen?

 

[BHuij]

Jr. Gentlemen's and Sr. Gentlemen's kits both seem to use a Schmidt 888 style rollerball refill, or in the fountain pen variants, they would both use standard international cartridges (and probably both come with a standard international converter).