This is William Barber's seated liberty design combined with the "Standard" silver wreath reverse. Sets were available in silver, copper and aluminum with either reeded or plain edges. It is not known what price the mint sold these for. This obverse was also combined with the regular issue reverse.
Half Dime J809/P897
Half Dollar J927/P1032
Photos courtesy of Ira & Larry Goldberg's Coins & Collectibles, Teletrade and Bowers and Merena.