Numismatic Guaranty Corporate (NGC) and Professional Coin Grading Service (PCGS) are the two most requested independent coin grading and certification services.
NGC's coin grading services provide a greatly needed benefit to coin collectors or investors who would like to purchase Double Eagle coins that are graded accurately. Besides recognized for consistent and accurate grading, NGC also guarantees graded coins to be authentic, giving coin collectors peace of mind.
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 1907 $20 MS 61 NGC LIBERTY GOLD DOUBLE EAGLE MINT ERROR  US $2,488.88
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 $20 DOUBLE EAGLE GOLD COIN 1923 MS 63 SAINT GAUDENS US $1,600.00
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 1907 $20 Liberty Gold Double Eagle Graded NGC MS 63 US $2,799.00
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 1925 $20 ST GAUDENS NGC MS64 SAINT MS 64 OLD FAT SLAB US $2,345.00
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 1914 S $20 MS63 STGAUDENS GOLD DOUBLE EAGLE NGC MS 63 US $2,088.88
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 1868 S $20 Gold Double Eagle NGC AU 58 Super Scarce US $5,999.99
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 2009 ULTRA HIGH RELIEF DOUBLE EAGLE GOLD COIN SCARCE US $2,800.00
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 1873 CC $20 Gold Double Eagle NGC Graded AU55 Rare Coin US $11,222.00
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 $20 Gold double eagle PL 1904 NGC MS 61 US $1,799.00
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 $20 Gold Double Eagle PL 1904 NGC MS 61 US $1,799.00
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 $20 Double Eagle PL 1904 NGC MS 61 US $1,799.00
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 1924 St Gaudins $20 Gold Coin Double Eagle MS 63 US $1,480.00
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