I had never seen these before. It's a 12-inch (album size) "Purple Rain" single on side 1 with "God" on side 2. The album is purple! These were released in 1984, I believe.
The cover is titled "Prince and the Revolution" and below that "Purple Rain". Prince signed it in purple, "Love Prince". I think both the "Love" and "Prince" look pretty good.
I have pics below.
I'm pretty excited. It's got the full Prince autograph, plus it's signed in purple on a "Purple Rain" 12-inch titled "Prince and the Revolution" from 1984.