Casey Matthews Autographed Mini Football Helmet. This is a mini Riddell Philadelphia Eagles Mini Helmet signed by the former linebacker, Casey Matthews. This comes with a COA from Palm Beach Autographs along with a photo of Casey Matthews signing the football. The helmet is also marked with the Palm Beach Autographs seal on the back. The mini helmet comes in its original package which is approx 7 1/4" x 5 1/2" x 5 1/2" and it weighs 0.57 lbs. There are a couple of sticker markings on the package.