Look at this website.
Fotouyin _ Fotouyin Identification _ From Tibetan friend sdbdqd_ Bronze Identification _ Other Bronze Identification _ Antique Identification _ Huaxia Collection Network
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Let me talk about my own point of view. Please forgive me if I am wrong. In my opinion, this Buddha's head is an old fake. . . . Of course, if yours is different from this one, I suggest posting a picture for me to analyze.