1980 One dollar silver HK$. In the center of its front is the head of the Queen of England. In the center of the back is the image of the lion king holding something. . The thickness of the whole coin is about 2 mm, which doesn't look very valuable. Because these currencies are widely circulated, there are many in the market. I suggest you go to the antique market to evaluate it. The price of this kind of thing is constantly changing. About 50 yuan.