I found an old grocery display shelf in the attic of the house I recently purchased, and wonder if anyone knows if it has any value. It is manufactured by Greetham Industries, and measures 40″ high and 56″ wide with 4 shelves. Any info would be greatly appreciated. It’s pretty dusty…but it’s been up there for years I believe. Also, not sure if the picture is attached….but I hope so 🙂