i picked up an 8 piece cup and saucer set dated between 457 and 165 (by the date codes that's between October 1957 and January 1965) i cannot find any reference for pricing these or even images of them online. Could someone help me out with some information on the background and perhaps possible pricing? The pictures may be a little blurry but they read Mayer China Beaver Falls PA. Marilyn Patented.