Because it's not actually uncirculated.And "Morgan City" isn't the correct name. They're called "Morgan" dollars, because the designer was named Morgan, and some were minted in Carson City.
In MS60 Grade uncirculated, a 1880 S Morgan Silver Dollar is worth about $52. In MS65 Brilliant Uncirculated, it is worth over $330.
The value for an 1879P morgan silver dollar, uncirculated, is about $45 (Red Book) price. If you have any Morgan's that have mintmark, CC, Carson City, the value goes up.
They stopped making Morgan dollars in 1921.
A average Mint State 1921 Morgan is $30.00-$40.00
Currently a 1880 S Morgan silver dollar in MS65 uncirculated condition is worth $156.
The designation "BU" for any coin means "Bright Uncirculated".
$24.00 to $35.00 for MS-60 to MS-63
Retail values are from $40.00- $70.00 for MS-60 to MS-63 coins which are the most common grades for a uncirculated 1891 Morgan
$60 to $300 depending on grade of uncirculated, but most likely around $150.
What is the value of a 1998 uncirculated silver dollar
List for this coin in MS-63 is $50.00.
This is a common date/mint Morgan dollar, retail for circulated coins is $17.00-$26.00 depending on grade. Uncirculated start at $35.00