An old plate over 200 years old

Hello, we have a plate (an old wooden dish) that is over 200 years old. It has been inherited, and its current owner is over 85 years old. He inherited it from his father, his father inherited it from his grandfather, his grandfather inherited it from his great-grandfather, and his great-grandfather inherited it from his great-great-grandfather, meaning it was passed down from his great-great-grandfather, lasting through five generations. This fifth-generation heirloom is considered historical and cultural heritage.