Tibetan/Himalayan Repoussé Metal Plaque with Dragons and Endless Knot

This appears to be a round, deeply embossed or carved metal plaque, likely of copper, brass, or bronze, exhibiting a rich, dark patinated finish that suggests age. The item is circular with a flat back and a small, raised loop at the top, indicating it was designed to be hung. The primary material seems to be metal, possibly with a darker base layer or 'backing' that shows through the openwork and contributes to the dimensionality. The overall color is a dark brown-bronze, with highlights on the raised areas showing a more coppery tone. There are several small, seemingly inset turquoise or teal-colored beads or stones irregularly placed around the perimeter, adding a touch of color and texture. The craftsmanship is intricate, featuring extensive repoussé and chiseled details. The central motif is dominated by two intertwined dragons or serpentine creatures, forming a circular pattern around a prominent endless knot or mystic knot symbol, which is a significant symbol in various cultures, including Tibetan Buddhism. Surrounding this central design is a complex pattern of stylized foliage and intricate scrollwork. At the top and bottom of the plaque, separated by some of the turquoise accents, are two distinct, grotesque-like faces or masks, possibly representing deities or protective spirits, each with large eyes and prominent features. The condition appears to be good for its age, with an evident patination that is desirable for such pieces, though some surface wear or minor abrasions might be present but are not clearly discernible from the image. The definition of the details suggests high-quality craftsmanship. Based on the iconography and style, it likely dates from the late 19th to mid-20th century, possibly of Tibetan or Himalayan origin.