They were anyway a standard part of the early tea sets. The date is wrong though, and should be around 1730-40. Some would date it earlier again but the style is still typical for the first half of the 18th century. Thereafter Imari steadily went out of fashion and was replaced with the rococo-style of Famille Rose . This information is given as an example of private conversation only and is not intended to be used as a promotion of any individual piece.
All opinions is the authors and is given as such with all hazards of judgeing anything from a photo.