Is Huang Wenjie's public law work a rubbings of Huang Tingjian? Is it valuable?

Huang Wenjie is Huang Tingjian [one of Song Sijia, Su Shi, Huang Tingjian, Mi Fei and Cai Xiang]. These rubbings were basically published during the Republic of China, which are valuable, but the specific value is not clear. You can search online whether some cultural companies in Beijing and Tianjin have bought this kind of rare rubbings. They have an auction company that specializes in auctioning Tibetan friends' collections.