The Stone Mountain Memorial Half Dollar was released in 1925 to commemorate the effort, begun in 1923, to carve the Stone Mountain Memorial in Georgia. The obverse design features equestrian figures of generals Robert E. Lee and Thomas J. (Stonewall) Jackson reviewing the Confederate armies. The reverse features an eagle, emblematic of liberty, poised on a mountain crag with stars dimly visible in the background. These are 90% silver. I have 5 of them available. All roughly the same condition at $85 each.