Vintage Associated Food Stores Porcelain Sign

Vintage Associated Food Stores round sign, located in Vancouver BC Canada. Year unknown, but likely early century. Nice patina on front, and a bit of cleanup will make it look nice. Unsure if the front is porcelain or not. Very heavy and appears to be sheet metal or tin. Pretty rigid, likely 1/16-3/8" thick and roughly 3 feet in diameter, but unconfirmed. Feel free to message if you have any questions!