Aztec Mayan Calendar Small Trinket Dish Plate Copper? / Bronze? Metal Vintage?

In good condition! No major flaws or imperfections! It does show some oxidation / green-ing, as well as other marks, scratches, stains, etc. due to age! Please use the photos also as descriptors when assessing the condition! It is an Aztec Mayan Calendar Small Trinket Dish / Plate! It might be vintage but I am not sure! It has no brand or manufacturing indicators! I’m not sure what kind of metal it is made from! The color looks like copper or bronze, but it might just be a coating / coloring, I don’t know! Please use your own discretion! It is 3D / embossed / textured! Measures approximately 4.50 inches in diameter. Approximately 0.50 inches deep. Weighs 2.5 oz, not including shipping materials.