Daniel Radcliffe Harry Potter Cage Signed Autographed 8×10 Photo ACOA COA. This item includes Autograph COA (AKA ACOA) Certification. One of the best in 3rd party autograph authentication. The listing includes high-resolution image(s) that are an integral part of the items description. These are authentic, original, hand-signed items without exception. Simply The Best Collectibles Company. Unpaid items are subject to cancellation. Due to the unique nature of our items, there are no chances for a re-do; we pack well for safe arrival. All sales are final.