Meoto yunomi set

The cups in this set are 3" and 2.75" high and marked on the bottom. This set was purchased in Japan in 1995. They came with no box. Bought as a souvenir and never used. What looks like cracks in a couple of places are just variations in the glaze.

These originally came in a box, but the person I got them from could not remember if the box was wood or cardboard. What it was made of would probably have been a good indication of whether these are studio pieces or were mass produced.