Lot of (13) Fr. 1621. 1957B $1 Silver Certificates. PMG Choice Uncirculated 64 to Gem Uncirculated 65 EPQ. Mismatched S/N Errors.A lovely grouping of 13 consecutive U/37/U47 mismatched serial number error notes that shows with (1) in PMG CU 64; (3) in PMG CU 64EPQ; and (9) in Gem Unc. 65EPQ. Seldom offered in an appealing consecutive group such as this.