Saw this listing and have never seen this display piece before. http://www.ebay.com/itm/Ultra-Rare-Oakley-Grenade-Pin-Keychains-/111829353545?hash=item1a098c8449:g:TCgAAOSwAYtWM7zp These look awesome to me, but does anyone know the story/details behind them? The listing doesn't provide much...