I watched the movie on BluRay last night. Not my favorite pic of all time, but I noted the scene where Valentin is signing check after check with a cool looking FP. Have any of the experts here seen the movie and identified the pen?
Love that movie. Can't answer your question, but I've paid more attention to fountain pens in movies in the last year. Of course, in a modern movie like this one, you wonder if they got the period details right and had a pen from that period or earlier.
Have to check it out and see. Since I got into FP's a few months ago, the only movie I can recall seeing a FP being used was the beginning of Inglorious Basterds. And pretty sure it was a plunger filler Col. Landa was using