Haiwan tea factory produced this raw cake with a combo of grades the median being "grade 6" sun-dried raw pu-erh.  More important than the grade is that this tea (as are all Haiwan Raw pu-erhs) is composed entirely of first flush Spring raw material and is carefully sun-dried and compressed.  For those not faint of heart this can be drunk now, but would be a good candidate for aging.