Hagi Ware Tea Cup and Saucer Pair Set

This is a pair set of Hagi-yaki coffee cups and saucers.
I purchased them in Hagi City, Yamaguchi Prefecture about 30 years ago.
I used them a few times for guests, but they have been kept in the cupboard ever since.
There is no box, but there is an engraving called Tenryu which I believe is the name of the kiln.
As shown in the photos, there are stain-like marks on the bottom of the cups.
I am looking for buyers who do not mind these imperfections.
They are very beautiful ceramics.