Look on the back of the coin to see if there's a small mint mark letter below the eagle. It may be blank or there may be an O or S.
Numismedia lists the following approximate retail values as of 04/2011:
No mint mark (Philadelphia):
Very worn condition - $17
Moderately worn - $38
Slightly worn - $91
Almost no wear - $338
Uncirculated - $480 to $16,250 depending on quality
"O" mint mark (New Orleans):
Very worn - $18
Moderately worn - $61
Slightly worn - $168
Almost no wear - $450
Uncirculated - $860 to $29,250
"S" mint mark (San Francisco):
Very worn - $17
Moderately worn - $54
Slightly worn - $110
Almost no wear - $382
Uncirculated - $600 to $31,850
DISCLAIMER: The retail values quoted are the best available as of the date shown, but may vary significantly due to changes in the precious metals market. Also the wholesale (buying) price of a coin will be less than the selling (retail) price. A reputable coin dealer will be able to give a more accurate valuation based on inspection of the coin.
1900 Barber or Liberty Head Half Dollar: With no mint mark, in good condition is worth $6.50, uncirculated is worth $400.00, proof is worth $700.00. With O mint mark, in good condition is worth $7.00, uncirculated is worth $650.00. With S mint mark, in good condition is worth $7.00, uncirculated is worth $550.00.
All Nickels, Quarters, Half Dollars and Dollar US coins dated 1900 have the motto E PLURIBUS UNUM on them, a denomination is needed.
The 1900 Morgan Dollar is common, average retail value is $26.00-$32.00 for a example in circulated condition.
50$
Value is for the silver about $2.50
The US didn't strike any half dollars in 1804.
All Nickels, Quarters, Half Dollars and Dollar US coins dated 1900 have the motto E PLURIBUS UNUM on them, a denomination is needed.
One Dollar
The 1900 Morgan Dollar is common, average retail value is $26.00-$32.00 for a example in circulated condition.
50$
A US half dollar with a date of 1979 is a Kennedy half dollar not a liberty half dollar. The coin has no silver and is only face value.
It has a metal value of about $10.
Value is for the silver about $2.50
About $4-5
50 cents.
a half dollar
The US didn't strike any half dollars in 1804.
A U.S. half dollar dated 1953 or 1952 is a Franklin half dollar. If it shows any wear, the value is only for the silver, about $10.00. The coins are very common.