The 1880-O Morgan Dollar, in MS-65 Grade, is so listed in the Red Book.
1880 confoederatio helvetica coin with number 5 on back good condition
Assuming the coin is circulated and has no mintmarks, retail value is $26.00-$32.00 depending on how much wear the coin shows. The 1880 Morgan is a common date.
Assuming the coin is circulated, the 1880 Morgan dollar ( not a Liberty dollar ) is a very common coin, the values are $26.00-$32.00 retail. A typical Mint State coin is $40.00
4-16-11>> Assuming the coin is circulated and has no mintmarks, retail value is $33.00-$37.00 depending on how much wear the coin shows. The 1880 Morgan is a common date.
If your asking about a U.S. 1880 Liberty Head $5 dollar gold coin it has .24187oz. of pure gold in it. This equals 7.5230 grams
The highest value silver coin struck in 1880 was a $1 "Morgan" dollar. Please check your coin again and post a new question including a brief description of its design to help ID the coin.
Assuming the coin is circulated, current retail value is $33.00-$40.00 depending on how much wear the coin shows. The 1880-S Morgan is a common date.
Circulated coins have retail values of $312.00-$414.00. The 1880 Liberty Head Half Eagle is a common coin.
6-30-11>> Assuming the coin is circulated, the 1880-S Morgan is a high mintage common date coin, retail values are $38.00-$44.00 depending on the grade of the coin.
4-20-11>> Assuming the coin is circulated and has no mintmark, the 1880 Morgan dollar is common. The retail values are $38.00-$44.00 depending on condition.
These coins average in price around $75. The exact price of the coin will depend upon its condition and the seller.
8-4-11>>> Assuming the coin is circulated and has no mintmarks, retail value is $37.00-$41.00 depending on how much wear the coin shows. The 1880 Morgan is a common date.