Bashes (creases) are dents intentionally made in the upper crown of a hat. These features are most noticeable on fedoras, trilbies, and cowboy hats.
Some of the most common bash shapes are the center dent, the diamond shape, the teardrop, the cattleman, and the telescope.
Written by TheVintageFashionGuild
See Also: Pinch
1950s cattleman crease on western hat
Courtesy of wyomingvintage
1955 open crown
Courtesy of The Metropolitan Museum of Art
1960s center crease on fedora hat
Courtesy of misterbibs
1960s teardrop creases on a trilby hat
Courtesy of coolfoolvintage
1980s diamond crease on fedora hat
Courtesy of alleycatsvintage
1980s telescope crease on fedora hat
Courtesy of thespectrum