free Hannecke brand 4 sided spinner rack with adjustable shelves.  Was used to display thin books at a shelf.  the shelves are adjustable.  It might be able to be used to display art prints, etc., face out.  This won't work too well for a home, but might work for a boutique or gallery.  It breaks down into small pieces that can fit in a car and be easily transported.  I do not have the ability to take pictures, but I might be able to get some tomorrow.