Aztec/Mayan Calendar Style Decorative Wall Plate

This appears to be a large, circular decorative plate or wall hanging, possibly crafted from cast metal or a heavy resin designed to mimic metal, given its substantial appearance and deep relief. The primary color is a dark, oxidized copper or bronze tone, with lighter, burnished highlights on the raised areas that suggest age and handling, or perhaps an applied patina for an antiqued effect. Its construction boasts significant three-dimensional relief, particularly in the central motif and the surrounding bands. The central design is highly intricate, resembling an Aztec or Mayan calendar stone, with stylized glyphs and a prominent face or mask at its core, indicative of Mesoamerican cultural influence. Surrounding this central medallion, there are concentric rings of varying decorative elements: some feature geometric patterns, others small, raised 'dots' or hemispherical bosses, and an outer ring displays angular, stylized glyphs or symbols, possibly depicting birds or abstract shapes. The edge of the plate has a serrated or textured finish, adding to its rugged, artisanal aesthetic. While the exact material is not definitively discernible from the image, the uniformity of color and texture, along with the detailed casting, points towards either a molded resin finished to look like metal or a cast metal piece. There are no visible condition issues such as major cracks or chips, but the overall patina suggests a naturally aged appearance or intentional distressing. The craftsmanship appears to be of good quality, with clear definition in the raised patterns. It likely dates from the mid-20th century onwards, created as a decorative piece rather than an ancient artifact.