Bronze Buddha, Kingdom of Siam 17th century

Buddha bust in cast bronze.
The head is solid and the rest of the bust is very thick, almost 1 cm in some places, making it very heavy. The casting and finish are beautiful. The mouth is inlaid with a reddish-yellow metal that has not oxidized over time, probably gold, I can verify and test the metal on request. The eyes were probably also inlaid, as there are 2 deep incised lines that are now filled with traces of white color. The ears are inlaid with a yellow metal that has oxidized, probably bronze. The upper flame is removable, hollow and held in place by a wooden tenon. Good condition, excellent old patina, centuries-old bronze. Probably Siam, Ayutthaya period or earlier. Has been cut at the diaphragm. The lower part has been lost.
Height approx. 45cm