Fr. 1551. 1966A $100 Legal Tender Note. PMG Gem Uncirculated 65 EPQ.;These $100 notes marked the end of production for United States Legal Tender Notes by series date and their sole purpose was to fulfill a long tenured obligation to maintain an exact dollar amount of United Stated Notes at the treasury. These 1966A dated examples are far more challenging than the 1966 notes to precede them and always bring strong attention among bidders when offered at this desirable Gem levels.