The Longacre design without stars combined with the regular reverse. This was apparently implemented by William Barber as Longacre died in 1869.
These were sold as part of complete sets from the half dime to the silver dollar. To view the set, click here.
In addition to the illustrated aluminum example, for which fewer than 3 are confirmed, this design was also struck in silver J1062/P1197 with about a half dozen known and copper J1063/P1198 also with about a half dozen known.