Red seal on the left indicates Series of 1928 (A through F). Rarest would be the Series of 1928 F and, of course, any STAR bill.
Red seal on the right (without the motto above the Lincoln Memoril) indicates Series of 1953 to '53C. Each has the same value if bills were in VF-20.
Red seal on the right (with motto above the Lincoln Memorial) would be from the Series of 1963; millions issues--with and without the STAR.
An interesting find, for sure.
Don......