The VTG Edwin Knowles Semi DOES HAVE A CHIP- look at pictures Vitreous Serving Bowl is a vintage ceramic bowl made by the renowned brand Knowles. With a diameter of 8 1/4 inches, this white serving bowl is perfect for serving salads, side dishes, or snacks during meals or gatherings. Its semi-vitreous material adds a touch of elegance and sophistication to any table setting, making it a timeless and practical piece for your home.