This Ultra High Relief $ 20 coin was sold for $ 2.76M including premium by Stack's Bowers on June 29, 2012. It comes back for sale by the same auctioneer on May 20 at Sotheby's New York. It is now estimated $ 2.75M, lot 93.
Please find below my discussion of 2012 along with the video which had been shared by Stack's Bowers before that sale.
President Theodore Roosevelt never did anything like everyone else. For his second inauguration in 1905, he required Augustus Saint-Gaudens to design a medal in parallel of the version traditionally handled by the official mint departments.
The result pleased that rebellious President. The following year, he asked Saint-Gaudens to redesign the whole American coinage.
Already hit by his terminal cancer, Saint-Gaudens stubbornly began this task, starting with the top gold coins : the eagle ($ 10) and the double eagle ($ 20).
Saint-Gaudens was primarily a sculptor. He imagined for the double eagle a motif in very high relief, which was tested in February and March 1907. Two dozen of proof coins were produced.
The result was superb but disappointing. It had taken nine strikes of a high pressure medal hydraulic press, normally used for very small quantities. It was impossible to consider such a technique for producing the big quantities needed for currency. The design of Saint Gaudens will however be later used, but with a flattened motif.
The two best preserved specimens of these rare Ultra High Relief Double Eagles are both graded PR69 by the PCGS. They may be considered as the finest pieces of American coinage.
One of them was sold for $ 3M including premium by Heritage in November 2005. The other is for sale by Stack's Bowers.