Specifications:
Weight: 33.346 grams
Gold content: 0.96750 oz. pure gold
Diameter: 34 mm
Composition: 90% gold and 10% copper
3 Types of Saint Gaudens Double Eagles Gold Coins:
- Type 1: High Relief, Roman Numerals, no motto 1907
- Type 2: Low Relief, Arabic Numerals, no motto 1907–1908
- Type 3: Low Relief, Arabic Numerals, with motto 1908–1933
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 1924 D ST GAUDENS $20 NGC MS 65  US $89,250.00
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 LOT OF 40 $20 ST GAUDENS IN AU PROTECTION GOLD US $82,999.00
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 1908 Motto $20 GOLD PCGS MS64 ST GAUDENS Double EAGLE $5000 Dollar Choice US $3,050.00
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The Saint Gaudens double eagle coins were produced between 1907 and 1933. At the request of President Roosevelt, the great sculptor Augustus Saint Gaudens designed the famous St Gaudens double eagle in 1907, which is widely considered as the most strikingly beautiful US coin.
The obverse side of the coin features the image of Lady Liberty striving into the future grasping a torch in her right hand and an olive branch in her left. Encircling her in the rim are 46 stars - one for each state in the Union at that time. The reverse side features an American eagle in flight. The wording "UNITED STATES OF AMERICA" and "TWENTY DOLLARS" were inscribed above the eagle.
The earlier 1907 St Gaudens gold coin was called “high-relief,” because the device was raised to an unusual height above the fields, which was excessively concave. The US Mint eventually switched to a low-relief version, however, because the high-relief St Gaudens gold coins took up to five blows from the press to raise the design into acceptable relief and didn't stack correctly for banking purposes. In the meantime, Arabic numerals replaced Roman numerals in depicting the dates for more convenience later in 1907.
In the next year, the motto "In God We Trust" was added to the coin as ordered by the congress. And the number of stars along the rim was increased from 46 to 48, when New Mexico and Arizona became states in 1912.
The $20 Sait Guadens double eagles were minted through 1933. In the year 1933 during the height of the Great Depression, President Roosevelt outlawed private ownership of gold by U.S. citizens, and thus the production of Saint Gaudens coin was ended.