Unless it's an S-mint proof in its original holder, it's an ordinary circulation coin worth face value. Feel free to use it to buy a candy bar or newspaper.
A 1980 50 cent piece is worth: 50 cents.
50 cents
Please check your coin again. It's not silver and it's not a dollar. If you look at the back you'll see it's a HALF dollar, and all circulation halves minted since 1971 are made of copper-nickel.
Silver was last used in circulating halves in 1969. All 1980 half dollars are made of the same copper-nickel clad composition as dimes and quarters.
If you found it in change it's only worth 50 cents. Uncirculated or proof versions are worth $2.50 - $3.00
It's not gold, it's gold-plated. The underlying coin is copper-nickel and is only worth 50¢. The gold plating would cost more to remove than you could sell it for, even at today's high gold prices.
Please turn the coin over. You'll see that it's a HALF dollar. It's also made of copper-nickel, not silver.
All circulation half-dollar dated 1971 and later were struck in copper-nickel.
Please see the Related Question for more.
1.00. It's made of copper-nickel, not silver.
200$
The only dollar coins issued in 1980 were made of cupro-nickel, not silver. They're only worth face value.
It's a common Susan B. Anthony dollar coin with no silver in it just spend it
1980 would make it a Susan B. Anthony dollar, and it's still worth one dollar.
The 1989 American Silver Eagles were issued as Proof and Uncirculated. Today the proof coin has an average market value of $25.00, uncirculated is $23.00.
They contain absolutely no silver, and they're worth one dollar each.
It's not silver and regardless of mintmark the value is $1. Only a proof or uncirculated coins sold from the Mint will have more than face value.
Morgan dollars were minted from 1878 to 1904 and again in 1921. Susan B. Anthony dollars were minted in 1980 and they're made of copper-nickel, not silver and have no added value if found in change.
He is asking about a 1980 LIBERTY Silver Eagle. It is a bullion coin that predates (and was privately minted) the American Silver Eagle (1986). The confusion comes from the reverse having the inscription βOne Silver Eagleβ which many know to be synonymous with βone silver Dollarβ. It is not legal tender and is worth its weight in silver and any premium you can squeeze out of a collector.
1.00
1 dollar
Not silver. All circulating half dollars struck since 1971 are made of copper-nickel and are only worth 50 cents.
Please check your item again and post a new, separate question. The last $10 silver certificates were dated 1953, and no US bills are dated 1980.