Scottsdale Mint Stackable 5 Ounce Silver Round:
This novel and beautiful round is called “stackable” because each round stacks & interlocks with the others. The precision machined front of the round is engineered to fit in to an exact copy of the design in reverse on the back. Even better, the 5 oz interlocks seamlessly with both the 2 oz and 100 g stacker rounds.

