No such coin exists for a few reasons.
Number 1, all US coin denominations (that were intended for circulation) greater than $1 are in gold. A silver $20 coin would be huge, the size of 20 silver dollars. (On the other hand, a $20 gold piece is roughly the size of a silver dollar)
Number 2, there is no US coin struck with the date of 1776. Nor is there any other country using the currency of "dollar" that would have struck a $20 silver coin.
What you have is a fantasy piece, post a new question including what the coin really is, its weight, diameter, and all other information about it, because it is not a US coin. (and most likely isn't even silver)
It's worth one dollar.
No U.S. One Dollar coins dated 1776 exist. The first U.S. silver dollar made is dated 1794. If the coin has a duel date of 1776/1976 it is a bicentennial Eisenhower dollar that contains no silver and is only face value.
No U.S. One Dollar coins dated 1776 exist. The first U.S. silver dollar made is dated 1794. If the coin has a duel date of 1776/1976 it is a bicentennial Eisenhower dollar that contains no silver and is only face value.
That's a bicentennial dollar, and it's still worth one dollar.
Bicentennial dollars are still worth one dollar.
$600.00
It's worth one dollar.
No U.S. One Dollar coins dated 1776 exist. The first U.S. silver dollar made is dated 1794. If the coin has a duel date of 1776/1976 it is a bicentennial Eisenhower dollar that contains no silver and is only face value.
No U.S. One Dollar coins dated 1776 exist. The first U.S. silver dollar made is dated 1794. If the coin has a duel date of 1776/1976 it is a bicentennial Eisenhower dollar that contains no silver and is only face value.
The 1776-1976 dollar was an Eisenhower dollar and the silver version has a current value from $14 to $325 depending upon the condition of the coin.
That's a bicentennial dollar, and it's still worth one dollar.
Bicentennial dollars are still worth one dollar.
It's a common coin, still worth one dollar.
His name is spelled Eisenhower, and the coin is worth one dollar.
That's a bicentennial dollar, and it's still worth one dollar.
That's the bicentennial dollar, extremely common, and still worth one dollar.
It's still worth one dollar.