A Stack of Yellow Mark Pu-er Tea Cake, Circa 1970s
Four Pieces of Pu-er Tea Brick Produced During Cultural Revolution, Circa 1970s
Two Stacks of 7542 Pu-er Tea Cake in Thick Wrapping, Late 1980s
Four Stacks of 7532 Pu-er Tea Cake, Early 1980s
A Stack of 7542 Pu-er Tea Cake in Thick Wrapping, Mid 1980s
