Primarily Petroliana Shop Talk Forums Thread Like Summary - Bread Sign Information Help

I recently acquired this bread sign with metal wire shelving in the back. Has anyone seen another sign like this type? And does anyone know the function of the metal wire shelving?
Thanks in advance for any responses!

Attached Images

most likely hung over the counter of a small store advertising bread which

the customer would see with the paper bags on the side of the cashier .. ...