I have 3 vintage Sheaffer fountain pens that were recently passed down to me from my late great-grandfather. I know that one of them is for sure a Sheaffer Snorkel, but I'm not sure about the other two.
Images of the Snorkel: https://imgur.com/a/TWdURQp
Images of the brown pen: https://imgur.com/a/BYhi5jT
Images of the green pen: https://imgur.com/a/2myBKsk
The two unknown pens I'm fairly confident I can easily restore. They both AFAIK have petrified sacs, though one of them came apart and I was able to get it out. The Snorkel I am less confident about, given its complexity. I'm somewhat sure that the filling mechanism works (I just accidentally sprayed my dress pants with Waterman Intense Black testing the nib and the pump), but getting the seals and especially the sac replaced will be a doozy.
Any comments or thoughts as to what those two pens are or how I should proceed in the restoration process?