AC/DC, Signed 8 1/4 X 11 1/2 Authenticated Mint Condition. Signed by Mick Jagger, Keith Richards, Ronnie Wood & Charlie Watts. Certified authentic by Holland Shier Authentication (HSA). Includes their serialized COA with a QR code that is tamper proof and the verification page on their website is encrypted to safeguard the information. A score between 60–100 is considered Genuine. This signed photo received a score of 72. Mick Jagger: 78 Keith Richards: 63 Ronnie Wood: 70 Charlie Watts: 78.