I'm pleased with the results. The shelves are adjustable and there was enough space for the boards to fit in behind the shelves.
Our wedding picture and invitation under a cloche.
The center shelf with old books and ironstone.
More old books with flower frogs, a magnifying glass, antique eye glasses, a ceramic apple and wooden shoes.
The two baskets on both side are children's books for the grands.
Since the backside is bead board, I can interchange it if I want but for now, I'm happy with this easy change!