So I think it must be some sort of center crease, but is there any more specific name for this one?
Here is a link to a pic from the movie. It's a bit of a spoiler alert, but this is the only pic I could find online that had him in the hat.
It's Bogie in "The Barefoot Contessa" with Ava Gardner.
http://ia.media-imdb.com/images/M/MV5BMTU1NDUxNzU5Ml5BMl5BanBnXkFtZTcwMDc1MTcyNA@@._V1._SX640_SY488_.jpg
Here is a link to a pic from the movie. It's a bit of a spoiler alert, but this is the only pic I could find online that had him in the hat.
It's Bogie in "The Barefoot Contessa" with Ava Gardner.
http://ia.media-imdb.com/images/M/MV5BMTU1NDUxNzU5Ml5BMl5BanBnXkFtZTcwMDc1MTcyNA@@._V1._SX640_SY488_.jpg