Kong Yinqing, the seventy-third grandson of Confucius, was born in 1959, a calligrapher. His calligraphy works have been recognized by the market. However, the specific value needs to be determined according to the specific situation of the work, such as the artistry, historical value and market demand of the work.
If you want to know the specific value of Confucius' calligraphy, it is recommended to consult a professional art evaluation agency or auction house.