Custom Namiki Falcon Resin Fountain Pen modified by John Mottishaw. He ground the nib (14k) extra fine and added flex to it.
The ink is Iroshizuku Tsuki-yo Night Sky (Greenish Deep Blue) which shades wonderfully.
This pen is difficult to use properly. Most fountain pens are not designed to achieve the line variation seen here. If line variation is what you want, buy a dip pen. They are cheaper, stronger, and will flex more.
Still set on this one? It can be found at this address for $254.00 :http://www.nibs.com/NamikiFalconPage.htm