It is worth around $1.
In circulated condition they are worth on average $16 to $20. 1889 Morgan dollars struck at Philadelphia are not rare dates.
Assuming that it was struck at Philadelphia and is circulated it is worth face value. If it is uncirculated they will sell for $1 to $20 depending on quality.
A circulated 1878 Morgan silver dollar can be worth 32 to 156 dollars.
The Philadelphia issue is valued at $51.00-$246.00 retail for circulated coins in G-4 to AU-50
In circulated condition, it's still worth one dollar.
More information is needed. The date and mintmark, who issued this "Certificate" and the grade of the coin.
It's a common date, still worth a dollar in circulated condition.
Assuming the coin is circulated and has no mintmarks, retail values run from $23.00 to $35.00. The Philadelphia issue 1890 Morgan is very common
6-26-11>>> The Philadelphia issue (no mintmark) in the circulated grades is $275.00-$445.00, Mint State examples are $525.00 or more.
A circulated example has a retail value of $26.00 to $32.00. This year of Morgan dollar is very common. A typical Mint State coin is in the $35.00 to $50.00 range.
A Jefferson half dollar would be a real find, because Jefferson is on the nickel and JFK is on the half dollar. Regardless, a 1979 nickel is worth 5¢ and a 1979 half is worth exactly 10 times as much.
All circulated bicentennial dollars are worth one dollar.