Walking Liberty Half Dollar, Liberty walking left wearing U.S. flag gown, sunrise at left, Eagle advancing left, The mint mark appears on the obverse below the word Trust on 1916 and some 1917 issues. Starting with some 1917 issues and continuing through the remainder of the series, the mint mark was changed to the reverse, at about the 8 o'clock position near the r, LIBERTY // IN GOD / WE TRUST // 1942, UNITED . STATES . OF . AMERICA . // E. PLURIBUS / UNUM // HALF . DOLLAR