The so-called transitional dollar using the reverse of 1866-1891.
These and the other "with motto" patterns of this date and also 1863 and possibly 1865 are actually restrikes made circa 1869 and into the early 1870s and were offered with restrikes of the other denominations in complete sets.
For 1864, specifically, the reverse die for at least some of these matches that used on some 1871 patterns and regular proofs showing 2 scribe lines, one above the E in United and the other above the ST in States as shown below courtesy of Heritage from their Lemus-Queller sale.
Examples of this were struck as follows:
Silver J396/P464 with about a dozen known.
Copper J397/P465 with about a dozen known.
Aluminum J398/P466 with 4 or fewer known.
Nickel J399/P467 with only 2 known.
Photo courtesy of American Numismatic Rarities.