Hello, I had this Porcelain Opium Burner for several years. It has been my inciense burner. All the metal seems to be copper or brass under the black paint and I could not find any mark. Thank You
As far as I can see it is a subject that Chinese are not knowing much about it, today. But, there is at least one website, in the US I believe, specialized on this. The items are usually from the 19th century or early 20th century and may have been used by early Chinese settlers.