The 2019-S Reverse Proof Pennsylvania Polio Vaccine Innovation Dollars, officially went on sale on the United States Mint website on December 05, 2019. The coins had a maximum authorized mintage of 75,000 coins. Within the first 24 hours of sales, the U.S. Mint restricted sales of the coins by only allowing 5 coins to be purchased per household. Most coins came in nice quality ranging from PR69-70 condition.