Error coins need to be seen, take it to a coin dealer. Most errors are very common and add no value.
Check it again. By 1980, all U.S. nickels had mint marks. That said, a 1985 nickel is worth 5 cents.
All U.S. quarters since 1980 have mint marks. Being that it's still 2014, even a mint condition 2014 quarter is worth 25 cents.
1980
1980
1980 is an even number greater than 2. It is a composite number.
This is a rare misstruck error and is worth up to $90.00 according to condition.
It's still worth 50 cents, the dates stamped into the coin adds nothing to the value.
The only dollar coins issued in 1980 were made of cupro-nickel, not silver. They're only worth face value.
500-1000 USD
Check it again. By 1980, all U.S. nickels had mint marks. That said, a 1985 nickel is worth 5 cents.
On the Nickel was created in 1980.
I have a 1980 penny with Martin Luther King Jr.s head stamped on it next to Lincoln's head and I have a co-worker who collects coins who says it is not worth anymore than a penny because it was not stamped at the mint. It is stamped not rsised as part of the coin.
Check that coin again. Starting in 1968, the mint mark on nickels was moved to the front of the coin, and the P mark wasn't added until 1980.
It's not gold, it's plated. The overdates and plating were done outside of the Mint. The underlying coin is only worth 50 cents in any case because it's a common copper-nickel half dollar. The plating and overdates make it an altered coin with no interest to collectors.
Unfortunately neither dates are silver. After 1967 the Canadian dollars were made of Nickel. They are worth around 1 - 4 dollars in any condition below MS65
Not silver. All circulating half dollars struck since 1971 are made of copper-nickel and are only worth 50 cents.
It sounds like a privately manufactured piece or an altered genuine 1980. If it's the first, it's probably only worth a buck or two. If the second, it's considered to be an altered coin and is only worth 50 cents.