Vintage Apple Computer Pin-Back Button.  Reads "Apple Presents Prizefest '91" and has a small white Apple Logo.  Authentic, from a former Apple employee.  Dates approx. 1991.  Measures approx. 1-5/8" x 2-3/4".  This item is used and is in good condition with light signs of use.  Please see photo for more details.  Will be shipped in a box.  See my other listings for similar items, I'm happy to combine on shipping for items purchased at the same time.