Buffalo Koi Skull Head Coin Charm Pendant Necklace Modern Vintage Streetwear New & Sealed! This buffalo skull head nickel charm necklace is the very definition of modern vintage streetwear. The two tone alloy casting shows cool details and rough retro touches. This charm pendant is versatile streetwear for any setting that makes the perfect gift for anyone. Ships free, new and sealed in a black velvet jewelry pouch. See our other items for more dark themed jewelry.