In my single USMC days, while stationed in Okinawa, to pass the time, I taught English at a local college. They had an exchange student from Texas A&M. He had several of these. It is like a cap badge in size, and has two pins on the back. I seem to remember that I traded a Marine Corps emblem for it.

I wear it on my Wallace tartan now (no real reason) I just thought it looked good on the Wallace red?