I just received this Bayard Superstyl 650 from ebay seller Ringsmith999, whom I recommend.
The pen is circa 1940s and the photographs just don't do it justice.
The nib is marked 18 ct, size 50 with the crossed nibs and the P and F on either side. Bayard, Fabrication Francaise and stylo sans reproche appear on the pen barrel with 650 at the end.
I've used a Henri Cartier-Bresson photograph of the great French painter Pierre Bonnard for the background and the writing sample is a quote of Cartier-Bresson's in Akkerman Passage Blauw on Tomoe River paper.
Thanks for looking!
Edited by betweenthelens, 07 July 2014 - 20:28.