Which of the following is produced by the U.S.Mint specially for collectors,and is usually sold in a protective display case?

Name: Which of the following is produced by the U.S.Mint specially for collectors,and is usually sold in a protective display case?
Brand: Quizplus
Rating: 4.8 (56 reviews)

Question

Quizplus · Accepted Answer

Proof bullion coins are specifically produced by the U.S. Mint for collectors. They are struck with special dies to ensure a highly detailed, mirror-like finish and are often sold in protective display cases to preserve their condition.

Which of the Following Is Produced by the U