I was a massive Ryne Sandberg fan as a kid.  I was gifted this back in 1993 and it hung in my childhood bedroom for a few years.  It's been in a box in storage for nearly 30 years.  I've never taken it out of the frame.  It was produced by Vine Line, the Chicago Cubs magazine.  This particular uncut sheet is signed by Ryne himself and authenticated by the old baseball card shop that commissioned it.  The sale includes the certificate of authentication (I have digitally blacked out my name for security purposes).  Sale includes the frames as pictured.  

I apologize for the poor photos.  It is very difficult to get a good picture without reflections - any glares you see are likely me reflecting in the glass.  More pictures available upon request.