(Temporary cross-listing from ebay) FS-901, the famous error/variety that launched a million searches in pocket change.  This coin almost single handedly created the collector market for errors & varieties.  Choice Extremely Fine (EF-45) and well struck overall for one of these - by the nature of the damage that caused it's creation, many tend to be mushy.  I have included an extra enlarged image of the salient markers of authentication, i. .e. the "moth eaten" back leg and area of raised lumps below the Bison's belly.  Regardless, guaranteed genuine obviously.  A solid example for an album set.  Free shipping - please note that due to value this will require shipping with Signature Confirmation; I commonly ship Express Mail at this value level.