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I sent a letter and SAE to Sir Michael on: 17th October 2013, and on Friday I recieved this signed photo back from him.

address I used was:

Sir Michael Caine,
Removed

Here is the pic:

Congratulations, that was a really fast success!
May I ask which address you used and if the signature is authentic?
I would love to obtain his autograph, he was amazing in "Now You See Me"!

Is this a real signature or a sec one?