It is worth $50.
August 2011>> As of August 2011 the value of a 1887 US dollar graded MS-63 is $73.
List for this coin in MS-63 is $50.00.
If you mean a Near Date, MS-63 coin $20.00
Assuming the coin has no mintark, the 1924 PEACE dollar is a very common coin of the series. Typical Mint State examples are $40.00 in MS-60 and $55.00 in MS-63.
A very common Morgan retail value in MS-60 $34.00/ MS-63 $58.00/MS-65 $156.00
Assuming the coin is a Mint state Liberty Seated Dollar the retail values range from $3,700.00 in MS-60 to 8,000.00 in MS-63
Assuming the coin is circulated, the 1891-O Morgan dollar is a slightly better date Morgan with retail values of $32.00-$65.00 depending on the actual grade of the coin.
Assuming the coin has no mintark, the 1922 PEACE dollar is the highest mintage and most common coin of the series. If your "perfect condition" coin has a grade of MS-63 the retail value is $34.00. No Peace dollar regardless of date or mintmark has been given the grade of MS-70 (perfect- flawless)
The coin is actually made of pure nickel, NOT silver, and it's still worth one Canadian dollar.
Average retail values are $30.00-$50.00 for Mint State examples in MS-60 to MS-63. The coin is very common.
The 1886 Morgan is a high mintage, more common date coin. A MS-63 example has a average retail value of $60.00.
The 1922 Peace dollar is the highest mintage, most common date coin of the series. Average retail value as of 6-19-12 for an MS-63 example is $45.00.