Production Period: This is a rare mug manufactured from 1956 to 1958 (only about 3 years). There are no cracks or chips, and it is a beautiful item with a glossy finish. The backstamp is also clear. This item is vintage. Due to its nature, imperfections such as color unevenness, clay unevenness, hairline cracks, spots, and print unevenness that occur during the manufacturing process are not mentioned. We cannot accept claims, so please refrain from purchasing if you are looking for a perfect item.