Vintage Japanese Lusterware Teacup and Snack Plate Sets

Set of 5 Soft Yellow Lusterware Snack Sets, trimmed in a black outline and have black handles. Teacups contain 4oz, H 2in x Diameter 3.25in. Snack Plates L 8in x W 7in. They have a small handle on one edge. The iridescence displays a play of lustrous color. There is some wearing of the paint on the handles. Please zoom in on photos. Name stamped on the back is I. Willison. Very Good Vintage condition.