Pearl hat pin

$33.60
I don't know what I'd do with a hat pin but I like this one.
Plus, read this part of the description:
"Huge pearl set on a brass tone stick pin the sharp edge is protected by a threaded "Nib" and safety cap closure That became mandatory after the "Hatpin Weapon" crisis 1910-1913. Protector "Nib" caps were required by law."

Here is a brief history of hatpins.
And some more info on hatpins as weapons.