A Stack of Blue Mark Pu-er Tea Cake, Circa 1950s
A Stack of 'Tong Xing Hao' Xiang Zhiqing Pu-er Tea Cake, Circa 1920s
A Piece of 73 Pu-er Tea Cake, Circa 1970s
Tong Chang Tea House Pu-er Tea, Circa 1960s
A Stack of Water Blue Mark Pu-er Tea Cake, 1997
