This dramatic and extremely rare double struck Standing Liberty Quarter was authenticated and certified by ANACS a few years ago. It was in a collection which was recently sold. I was offered this major mint error and immediately purchased it.
The second strike was struck off-center on the reverse. It is extremely dramatic with both eagles visible. The obverse was indented by a blank planchet during the second strike.
This is the most dramatic of three known double struck Standing Liberty Quarters. It is very rare to find any major mint errors in the Standing Liberty Quarter series. It would be the highlight of a mint error collection or a Standing Liberty Quarter collection.