Pure white porcelain rice bowls, set of 6 lotus flower bowls w/ flower shaped plates

Vintage white porcelain china bowls and small plates shaped like lotus flowers... these are so pretty! It's a set for six, all in excellent condition without damage or signs of use.

The rice bowls measure about 4 1/2" in diameter, and the plates are about 5 1/4" in diameter. These aren't marked, though are probably made in Japan, we think. OMC / Otagiri?