Does anyone know if there are newer cartridges that will work in Osmiroid fountain pens? I picked up one at a thrift store and can't seem to find any replacement cartridges that
On Fountain Pens » Calligraphy: Osmiroid Calligraphy Set
Osmiroid Black & White, Cartridge pen
A New Old Stock Osmiroid 65 – Goodwriterspens's Blog