The A is part of the designers monogram, Augustus Saint-Gaudens. But it don't matter, the coin is a replica (fake) and has no collectible value. The 1933 Double Eagle is likely the most reproduced coin in US history, the only legal example sold in July-02 for $7,590,020
$1370 to $15000 depending upon the condition of the coin.
Being that it's a copy, it's not worth much of anything.
A twenty dollar bill with a star on it can be worth different amounts depending on the date. A 1914 twenty dollar bill with a star on it is worth 1000 dollars.
The only legal one, sold for $7,590,020.00 in July of 2002
Twenty
1848. Silver. Twenty. Dollar. Coin
$1,320.00-$1,520.00 are current retail values for this coin in circulated condition
twenty dollars
about twenty to twenty five cents
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This is a high value coin with retail prices starting at $10,000.00 to more than $80,000.00 for circulated examples.
The U.S. has never made a $20 silver coin. Look at it again and post new question.