Peter Gammons autographed memorabilia. Add this Peter Gammons Autographed Rawling Major League Baseball - Grandstand Cube Included - Certified Authentic to your signed memorabilia collection. This product has been authenticated by Sports Collectibles and comes with a Certificate of Authenticity and matching taper-evident hologram. All Sports Collectibles memorabilia is backed by our 100% Money Back Guarantee. Get your authentic Peter Gammons Autographed Baseballs from Sports Collectibles Online. This bold Peter Gammons signature is authentic and can be an excellent addition to your man cave, home or office.