I personally don’t think this album was signed by the members of AC/DC.
Definitely Not Authentic, IMO....
Bjarne beat me to it. IMO, it is not authentic
Get a refund if you can, because these are not authentic. 100% forgeries, IMO.
What are you comparing your Sigs too? Do you need some Authentic Examples?? I'm asking, because these Sigs aren't even close to Real Ones.