This odd pen really is a Mabie Todd Swan. I’m placing a few pictures here to spread knowledge of it. I believe it first appeared in the Facebook Mabie Todd Fountain Pens group.
A Strange Swan
Goodwriterspens's Blog
Fountain Pen Obsession
This odd pen really is a Mabie Todd Swan. I’m placing a few pictures here to spread knowledge of it. I believe it first appeared in the Facebook Mabie Todd Fountain Pens group.
Goodwriterspens's Blog 
That is such an interesting Swan …. I have to say that I find it pretty ugly, but thanks for sharing it, I’ve never come across the like before. What strikes me as odd is that it says it’s a Self-Filler, but it doesn’t look like one.
Thank you again, Deb.
I agree. It’s a bit like those fat black Japanese pens that some people with arthritis like.
I wonder if this pen may be something that apprentices at the factory had to do as a skills test.
Yes, that’s possible.