Vintage Siam Sterling Thai dancer brooch with fine details

The design and texture of this brooch is fascinating from the headdress, skirts, chains and adornments to the positioning of the hands and feet. Measures just over 2 inches tall by just under 2 inches across. Definitely vintage but not sure of exact age because the mark Siam Sterling was used long after Siam became Thailand. In excellent shape, but note that the some of the details are quite sharp and the closure is not the safety type now used almost exclusively.