Made in Western Germany. These vintage plastic decal stones were originally made for the 1976 USA Bicentennial celebration. They are also known as porcelain paintings, limoges and as cameo picture stones. Each flat back stone has a decal image applied to the top surface of a smooth buff top cabochon base, then a protective lacquer coating is added for further protection of the decal. Due to lacquer and decal coloration, background shades may vary.