1991 American Bank Coin Set from the Denver Mint. The original set from the Denver Mint comes in a sealed plastic cover inside a special packaging with a Certificate of Authenticity (COA). This is a rare and distinctive set. The collection includes 5 coins: - Kennedy Half Dollar (Denver D) - Washington Quarter (Denver D) - Roosevelt Dime (Denver D) - Lincoln Cent (Denver D) - Jefferson Nickle (Denver D) In addition to a coin featuring the Denver Mint logo (D).