These aren't under Hawkeye because this is obviously not a lady. I kept forgetting to pin mine onto my costume, anyway, and have since lost mine. ^_^;; This is Mustang, and a zoomed in shot because we kept forgetting to get close ups.
The proof for these pins was carved by a friend out of Sculpey, based on a screenshot of the first anime. As marvelous and beautiful as Brotherhood was, they really skimped on a few details. Details like the pin designs. She then made molds out of latex, and I cast enough pins for each of us and then some extra out of polyester resin, with silver spray paint for color. We had to glue the pins onto the back, but I think that next time I'll be embedding them into the resin. Also I've been experimenting with using powdered metallic pigments in the mold rather than paint on the casting, and it tends to look better (though the iridescent blue and gold I experimented with aren't exactly accurate to the show...).