Owner Comments:
These AI coins were released by the US Mint from 2018 to 2032. AI coins are issued in the order that the state was admitted to the Union with four coins per year in proof and reverse proof finishes.
Extremely RARE 2018-S AI Pennsylvania Proof. Out of 1,889 graded by NGC, only 299 were graded Proof 70 UC or 15.83%. This is the Key Date for the entire AI set.
This Pennsylvania AI coin is the "Key Date" with quality issues at the US Mint resulting in very few coins graded as PR-70 UC by NGC. See the NGC Population data where only 1 of 274 graded PF-70.
2019-S American Innovation – Pennsylvania Polio Vaccine
NGC Proof 70 UC with the AI label
This coin is stored in a white plastic slab box.
Population: 1 of 274 and 1 of 299 or 15.83% graded PF 70.
EXTREMELY RARE.