I bought these coffee cups of Ando Masanobu (安藤雅信) at his gallery 'Momogusa (百草)' in Tajimi (多治見) which is in a restored old Japanese house.
I only drink coffee when my husband makes coffee grinding coffee beans in the weekend. And as I don't drink it so much, I chose a smaller cup for me.
About a year ago, I was shocked to discover the bigger one had been chipped. I didn't know how this happened.
I repaired it and my husband began to use it soon without waiting the lacquer become hard enough in half a year. So when washing it, we treat it carefully, not touching the repaired part.