Jasperware was matte finish pottery product (some refer to it as porcelain) developed by Josiah Wedgwood and used to imitate onyx or sardonyx in that it had a background color (usually blue, but not always) with the white design in relief.
|Prior to 1860||Wedgewood|
|1860 - 1891||Three Letters: Month, Potter, Year|
|1891 - 1908||Wedgewood
|1908 - 1969||Wedgewood
Made in England(stamped separately)
|1970 - Present||Wedgewood Made in England|