Is Ceng Fu's calligraphy collectible?

Ceng Fu, No.3 Stone Story, 1933, from Fuzhou, Fujian. In middle school, I studied watercolor painting with Wu Qiyao. 1957 was admitted to the East China Branch of the Central Academy of Fine Arts (now China Academy of Fine Arts) and was personally guided by famous teachers such as Pan Tianshou and Gu Kunbo. 1962 Graduated from Landscape Department of Chinese Painting Department. 1968 works participated in the Moscow Art Exhibition. From 65438 to 0984, he was transferred to Zhejiang Painting Academy as a full-time painter. His works are collectible!