Koi fish Yin Tang / Tai Chi / Japanese Wave scene Challenge Coin

Crafted for collectors and everyday carry enthusiasts alike, this 40mm solid brass challenge coin is a bold fusion of art and utility. With a 40mm diameter and a hefty 5.7mm thickness, it is perfect for fidgeting or displaying. One side features a deeply engraved Koi in a Tai Chi / Yin Yang pattern, captured in elegant detail, while the reverse showcases a traditional Japanese art wave scene that’s both tactile and visually striking. Each coin is finished with the maker and a unique serial number engraved on the edge, making every piece truly one-of-a-kind.
 
Whether you're drawn to Japanese/Chinese symbolism, Japanese art or premium pocket gear, this coin is a standout addition to any collection.