Chinese Incense Burner Jadeite Inlay/Overlay and 50 similar items

Chinese Mixed Media Incense Burner Jadeite Inlay/Overlay 4 Piece 11" 3 Dragon heads with 2 on the outside having dangeling rings. The upper main dragon has 4 rings. Possibly a cast stone base with a bronze top. My first inquiry’s were pictures I sent to the Smithsonian Asian artifacts department. They responded with a link to a retired scientist from the instituations email but there was no response from him. They told me being a government entity limited their comments and only to say they had never seen anything quite like it. 1 dealer dated it to mid 19c. An reputable antiques house here in Connecticut is thinking more contemporary. Some of the inlays / surface overlay tested as jadeite. The 3 stones on the top are not Jadiete. A couple of symbols seen may be painted or overlayed. I cant intrupert all symbols in meaning, but luck and happiness were 2 of which I'm 85% sure. The bottom has no markings. 9 1/4" from dragons nose to nose. Weighs around 5-6 pounds.