This commemorative 3D metal challenge coin is crafted from high-quality zinc alloy, ensuring durability and strong corrosion resistance. The metal surface features a special enamel-filling technique, resulting in vibrant colors, sharp details, and excellent wear resistance. The combination of metal and enamel not only enhances visual appeal but also gives the coin high collectible value. Each coin boasts a dual-sided design, with customizable patterns, text, or logos on both the obverse and reverse sides, adding uniqueness and versatility to the souvenir.