How to mount display rack?

[blown motor]

I picked up some wire racks to use for displaying old road maps and dealer brochures in the shop. The question is how to mount them. I bent the "wings" so they will lay flat on the wall and hold the top of the rack out from the wall. But now how to secure it? I've thought of small screw in eye bolts and bow the rack to slip it into the eye bolts. Looking for other incognito ideas.

[Bullitt-]

  I think of these Closetmaid clips sold at the big box home improvement stores

https://closetmaid.com/webapp/wcs/stores/servlet/en/closetmaid-us/closetstorage/replacementparts/poleclips/supportpolehardwarebag