Think you can tell the difference between the real ones and the fakes?
Take a few of Randall's McGwire Auto Quiz's and find out.

Which of the following McGwire signatures are real and which are fake?
Some signatures date back to 1987 so be careful!

| Quiz #1 | Quiz #2 | Quiz #3 |

Also...Have an autograph you're not sure about?
Check out Randall's McGwire Autograph Authentication Service