Don Zimmer Autographed Baseballs are top selling items among New York Yankees signed collectibles. This item has been personally hand-signed by Don Zimmer and comes comes complete with a Certificate of Authenticity (COA) from Seller. The product will also be affixed with a hologram and sticker with a serial number to confirm authenticity. This Don Zimmer Autographed MLB Baseball- Prime One Sports Authentication is backed by Prime One Sports Online's 100% Money Back Guarantee. Order ships same day.