Hat pin maybe

[sscindercoop]

Found this in a local park today. At first i thought it was a pin until i realized the back has a bolt mounted on it. Maybe it went on a hat ? Also would like to find out the age. Thanks in advance for the help.

 

[72cheyenne]

Collar brass, I think WW2-present vintage.

 

[Woodland Detectors]

Agreed! lol I just posted one myself...cool find!

 

[oldfireguy]

Pre WW2 post and screw collar disc. Stopped being used mid war or until stocks ran out. Current brass is clutch back.

 

[Carson Coin Master]

it may also be Vietnam era. they still had the screw on backs in that time