4 Japanese Geisha Design Sake/Tea Cups PLS READ

Set of 4 (FOUR) vintage porcelain sake (or tea) cups, made in Japan and in excellent condition. One cup appears to have a crack on the inside, BUT THIS IS NOT A CRACK. It is a "ripple" or "fold" in the porcelain that would have occurred during the manufacturing process. This defect is smooth, shallow, and does not extend to the outside surface. The cup is still perfectly usable and/or fine for decor purposes. Other than this minor flaw, these are in excellent condition - there are no chips, scratches, marks, or stains. The colors and images are bright and sharp, and there is no crazing. Each cup features a different image of a geisha, and these are nicely detailed and well done. There is also printing - possibly a signature? - on each in Japanese characters. The gold foil sticker on the bottom of two of the cups says "DL Japan". Each cup is just under 3.5 inches high and 2 inches in diameter.