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||Wedgwood|
|1860 – 1891||Three Letters: Month, Potter, Year|
|1891 – 1908||Wedgwood|
|1908 – 1969||Wedgwood|
Made in England
|1970 – Present||Wedgwood Made in England|