A couple years ago I sent two pictures and a letter to the address in the Bahamas that was up for a while. I received these back. Are they real? I am guessing not; they have been sitting in a drawer since I got them back, figured it was time to try and verify.
Unfortunately, I don't think they're authentic. It looks like his secretary tried his/her best to replicate Mr. Connery's signature, but to no avail. Go to Google and take a look at his "in person" signatures and then I think you'll see what I mean. Plus, a few years back, he admitted in an interview that he hates giving autographs, as he isn't being paid for them.
TTM: Tim Allen, Christian Bale, Sean Bean, Pierce Brosnan, Peter Capaldi, John Carpenter, Nick Castle, Henry Cavill, Hayden Christensen, Sean Connery (possibly secretarial), Nikolaj Coster-Waldau, Charlie Cox, Courteney Cox, Daniel Craig, Bryan Cranston, Benedict Cumberbatch, Judi Dench, Peter Dinklage, Christopher Eccleston, Aaron Eckhart, Jesse Eisenberg, Robert Englund, Dane Farwell, Noel Gallagher, Walton Goggins, Michael C. Hall, Mark Hamill, Tom Hardy, Freddie Highmore, John Hurt, Jeremy Irons, Val Kilmer, George Lazenby, Andrew Lincoln, Brad Loree, Matthew McConaughey, Ben Mendelsohn, Mads Mikkelsen, Jason Momoa, Roger Moore, Daniel Radcliffe, Tim Roth, Matt Ryan, Taylor Schilling, Tony Shalhoub, Don Shanks, Christian Slater, Matt Smith, Ringo Starr, David Tennant, Billy Bob Thornton, Christoph Waltz, Adam West, and George P. Wilbur.