I got this for my daughter who is a major Star Trek fan. She likes all the shows and really enjoyed the movie.
This is based off the 2009 movie version of the badges and has two pins on the back, one at the top of the chevron and the other in the wider point on the bottom. It's very secure once in place with clutch backs to hold the pins.
It's a nicely shiny metal and has the right dimensions. You could use this with an appropriate colored teeshirt and slacks for a very minimalist costume.
Definitely a hit with her. The box is cardboard and easy enough to open and close to make a decent display if you want to use it that way.