I get nothing from either company, but either of these places would be able to get you a converter if one exists for your pen and will probably do the entire transaction over the phone.

Artlite in Atlanta
http://www.artlite.net/

or

Fountain Pen Hospital in New York
http://www.fountainpenhospital.com/

Always visit Atrlite when down in Atlanta, they offer an incredible selection of fine pens at very good prices for open stock (unboxed) stuff. Most of my fountain pens come from there.