Sheaffer's

Sheaffer's fountain pen. I have no idea how this pen is, but it has to be at least 50 years old or older. It was in my Grandmother house. I picked up a cheap pack of multi-colored ink cartridges from HobbyLobby (5 different colors).
I really like how this pen writes. Very smooth.
I have purple ink in it now. I used up the black ink. The black seemed to work better in the pen, might have some difference in the substance.