Daybreak vintage Royal china bread & butter plates, black rooster

Vintage pottery dinnerware, set of four bread and butter or dessert plates, 6 1/2" in diameter. These aren't marked but are Royal china (Sebring) we think? Royal also made many patterns for Sears, including the Harmony House "Daybreak" pattern which looks very much like this pattern, a rooster and scalloped border in black.