Not sure if this set is intended for tea and not sure if I am identifying all the pieces properly. The saucers could be shallow bowls, perhaps the cups go on the tray, not the jars. Whatever it is & however its used, its very pretty! I believe it is made in China. Each piece has the circular blue design with a raised flower in the center. Well made and painted.
2 Cups - each is 3.75 in tall 4 in.wide including handle. Each cup holds 8 ounces.
2 Saucers - each is 5 in. X 5 in.
2 Small Jars with lids - each is 5.5 in. tall including lid
1 Tray - 9 in. X 4 in.