For trade Nakaya portable writer

Hello Folks, well I am going to put my Nakaya up for trade again, would prefer a straight trade but would consider a sale as well.

I am sure most of you have seen my Nakaya, purchased from John Mottishaw with his lovely custom double broad stub flexible nib. My pen is in the very dark black/red finish and comes with the kimono but no box.

I am looking for a Cartier fountain pen, preferably the Diablo but will consider others and must be in good to mint condition.

thanks so much, hope your all having a lovely summer!