2000 Lincoln Cent--Overstruck on a 2000-Dated Sacagawea Dollar--MS-66 (PCGS). This is a fascinating example of a remarkable double denomination coin. The first strike was normal, resulting in a Sacagawea dollar that is well centered and fully impressed on the correct planchet. The final digit 0 in the date of the dollar is discernible, confirming that it was struck from 2000-dated dies. As the Lincoln cent bears no mintmark, both strikes are presumably attributed to the Philadelphia Mint. Remarkably, this Sacagawea dollar then ended up between cent dies, where it received sharp impressions of both the obverse and reverse. Apparently this second impression was made in the absence of a collar or, the dollar planchet prevented the collar from deploying around the anvil die in the normal manner. The Lincoln cent strike is at 5:30 relative to the Sacagawea dollar obverse, and all design elements that are present from both impressions are razor sharp. The surfaces display intense satin luster throughout, with wisps of pale pinkish-rose iridescence on otherwise dominant medium gold patina. A second example of this curious type was offered as lot 3249 in Heritages Summer FUN Signature Auction of July 2015. That coin, also certified MS-66 by PCGS, realized $35,250. The present example is nicer in our opinion, as the Heritage specimen shows no evidence of the Sacagawea dollar date and has edge depressions at 11 and 5 oclock. Here is a truly exciting piece that will be a find for the specialist in modern Mint errors or as an addition to an advanced Sacagawea dollar set. From the Q. David Bowers Collection.