I have a Parker Desk pen and base. There is no filling mech. in the pen. It may be that it takes a cartridge. No idea of age.
My question, there is a "stump" in the head of the pen. How can I tell if it's for a cartridge or an aerometric filler? If a filler are they hard to find?
Any suggestions as to where to purchase?

Thanks
Steve

The pen is a 45, and it unscrews at the trim ring. It can use Parker or Aurora carts or converters.

THANK YOU!