2014 Narrow Reeds 1/10 oz US Gold Eagle.
    After 10 years only 39 "2014" 1/10 oz Narrow Reeds US Gold Eagles are known to exist. 24 at NGC and 15 at PCGS.
     I don't believe there are very many more of these to be found after all this time however even if a couple more of them are found in the following years this is still going to ultimately be recognized as the rarest and be the Key US Gold Eagle.  Only 39 of this variety are known to exist.  That is astonishing if you think about it from a numismatic perspective.