Arizona is a likely next candidate for Goldbacks as Arizona is the 8th best state in the 2024 Sound Money Index and all 5 current Goldback states are in the top 12 Sound Money Index. Also, Arizona borders two Goldback states, Nevada and Utah, and 4 of the 5 Goldback states are adjacent to each other. Arizona does not impose a retail tax on Gold or Silver found in Section 21.b. Celebrate Arizona's statehood with a Perfect Proof 70 coin or remember Arizona's beautiful Grand Canyon with 5 Oz of pure Silver.