These One oz Australian Gold Kangaroos were received by MintID within the Perth Mint and packaged within protected playing cards. The card provides a capsule House for that coin and features a 128-little bit encrypted microchip. If tampered with, the microchip “dies” and renders a tampered end in the MintID https://smart-money-empire.com/product/buy-australian-kangaroo-1-oz-gold-coin/