the_economist wrote:周志华. Could you name the clay for us?
first time seeing Liu-fang-jing made by 周志华.
Your pot looks Hei Xing Sha, aka Jia Zi Ni (Taiwan calling), Factory-1 made that in the early-80s. I am merely talking about the mould (hard to confirm without better pics), if it's a genuine, the clay just is that.
If it's later (none-F1), then it's totally different stories.