Here's another hat from my collection. I lightened all the photos so you could see the detail, but the hat is actually jet black.
It is supposed to be worn tilted on the head over the large Victorian hairstyles, but I couldn't show that with the glass head I pulled for display. I believe this is a Victorian Mourning Hat, circa 1890, meant for full mourning. I thought it was a toque, but apparently toques have no brim, so that guess is wrong.