This is a Homer Laughlin, Coventry, Casualstone, bread and butter plate.
These pieces were all produced around 1970 by the Homer Laughlin Co., for Coventry, who then distributed them as their own. They were made using the Homer Laughlin, Fiesta, molds. There were a few original pieces added to this pattern, but for the most part, including the antique gold color, they are the same as HL Fiesta.
I have sixteen (16) of these little plates for sale, each one individually. They are all in good, used condition.
Take a look at the pictures, and if you have any questions, please e-mail.