This is a 1964 P Silver US Mint Set cut from its Philadelphia Mint Set Cello and placed in a Whitman Plastic holder. These coins are untouched from their Mint Set packaging and appear as sent from the Philade;phia Mint. Remember 1964 was the First Year of the Kennedy Half Dollar and the first and last year of the 90% Silver Kennedy Half Dollar minted for normal Circulation. Also the last year of the 90% Silver Washington Quarter and Roosevelt Dime minted for Circulation. A Year of big changes in US Coinage.