At present, there are two kinds of official hat walnuts on the market, one is the official hat with diamond pattern, the other is the official hat of Wang Yong, and the official hat is also divided into producing areas. Laishui is different from Shanxi and different regions. Besides, the size you said is wrong. I can't give you the price because your question is too general, and there are many mistakes between 3 and 6.
"Blog Old Source Walnut Products" will answer your questions.