Looking at the font, it should be in gold inscriptions, and the content is: Xu's treasure tripod, halogen is used forever (read counterclockwise from the middle on the far right).
Based on this content, it should be copied from a tripod. The original tripod should have been cast by the Xu family (descendants of Zhou Gongdan, who was granted the title of Yanjin in today's Hua County, Henan Province) during the Western Zhou Dynasty.
The word "Shi" in the article is deformed during the rotation, causing it to look like an upside-down "Xi". The word "宝" is used here as the abbreviation of that time.
The other characters are all in standard bronze handwriting (similar to tadpole seal script).
If what you see is the original tripod, then you really should dedicate it to the cultural relics department, but this plate is made of white porcelain, and it cannot be too early. It is most likely a modern item.