Set of Six Gardner Plates

This is a very rare set of six porcelain plates from the Everyday Service made by the Gardner / Moscow factory (it was also made at the famous St. Petersburg factory). These plates I think were made in about 1780-1800 but the books are a bit  vague on the time of this mark some saying as early as 1765 others as late as 1810. So it was certainly made between 1770 and 1810 and judging by the manufacturing flaws on some of the plates probably earlier rather than later. The service was made for over a hundred years so it was a very popular design. The plates are very well painted with the famous Gardner rose in the center as well as some other flowers and a nice orange brown trim to the rim. They are of a nice size being a tiny bit over 9 inches in diameter. The plates are in superb condition with one having a small under rim chip that cannot be seen from the top. There are some manufacturing flaws like black spots, firing cracks and some small bumps in the paste and two or three spots of stacking wear that are not bad at all. All but one are marked underneath with blue dots or lines as well as impressed Tapahepz or Gardner in Cyrillc letters on the footring. Some have impressed numbers like 31 and or puce numbers. I took the picture of the mark from one of the plates as it was clearer than one some of the other ones. Please email me for more information or other pictures.