Thank you for the point, it makes me feel rather awkward, because I'm not sure I understand why neither als15 nor Paul Jaray answered.
This puzzle was not easy for me, I didn't know the answer, I had to search and I couldn't find it on the Internet, once more I had to go to the good old books, but I have answered puzzles that have been very easy for me and I don't see anything wrong with that.
You are right, it was not easy at all.
I left it only because als15 wrote a book about Vignale and I had a copy.
I knew Carnut wrote the english version of it and It was easy to assume he found there this little known info.
I just followed als15 example...if it was too easy for him, after a quick look into the book, it was also easy for myself.
...and furthermore, I know how much Carnut dedicates himself in new puzzles each time (and how he is not pleased with extra-quick identifications
) and for just one time, I decided to pass.