Fr. 1910-A. 1977A $1 Federal Reserve Note. Boston. PCGS Currency Very Choice New 64 PPQ. Mismatched Serial Numbers.An important mismatched serial number error which shows with a five digit mismatch having a left serial number of A97250658B and right showing A86139658B. These 1977A Boston errors are typically found in circulated grades which gives great allure to this bright pack fresh note with deeply embossed inks and nice centering.