You'll need to provide more information. What kind of double-strike is involved? The same image twice on each side, but out of alignment? Opposite images on each side? Or on one side only?
All the Washington Quarters minted in the year 1989 carried a mint mark: "P," "S," or "D." The P and D minted coins are worth in MS60 condition: 75 cents; the S coin was minted only in proof and its value is: $3.00.
Mis-stamped coins often have value over and above theri face value for collectors. However it is difficult to say for sure about the value of a misprint coin without actually looking at it. Condition of the coin is very important in such cases, if it is mint condition it may be quite valuable, however it if is worn it may not be worth all that much.
There are two possibilities: If the coin is thinner than a regular quarter, you have what's called a lamination error that occurred when the outer layers of cupronickel cladding detached from the copper core. Lamination errors among clad quarters retail for $10 to $15. If the coin is the same thickness and weight as a normal quarter, someone plated it. Unfortunately that makes it an altered coin worth only face value.
Current retail values is $10.00 issue price was $11.00
The value of a 1989 1-cent and 2-cent piece is typically quite low, often just their face value unless they are in uncirculated condition or have unique errors. A 1983 5-cent piece also generally holds its face value, but it can be worth more to collectors if it's in excellent condition or has a specific mint mark. Overall, unless these coins are in pristine condition or have rare features, they are not worth significantly more than their face value.
a quarter
25 cents.
Face Value
Generally speaking, damage can only take away from a coin's value. Feel free to spend it.
If it is in very-fine to uncirculated condition it is worth $7.00.
All the Washington Quarters minted in the year 1989 carried a mint mark: "P," "S," or "D." The P and D minted coins are worth in MS60 condition: 75 cents; the S coin was minted only in proof and its value is: $3.00.
If you are describing a small "S" next to the bow in Washington's hair, that's the mint mark indicating your coin was struck* in San Francisco. The bad news is that San Francisco only makes proof coins, specially-struck coins that are sold to collectors at a price well above face value. But because your coin has been taken out of its packaging and spent, it loses most or all of that extra value. If you're describing a different kind of letter, your coin has been altered by someone with some metalworking tools, and is only worth a quarter. (*) FWIW coins are said to be struck rather than "stamped".
what is the value of a 1989 barbie holiday collection
Double Dare - 1989 is rated/received certificates of: Australia:G
The value of a 1989 double stamped penny, also known as a double die error penny, can vary significantly based on its condition and the extent of the error. Generally, such coins can range from a few dollars to several hundred dollars for well-preserved examples. However, it's essential to have the coin assessed by a professional or a numismatic expert to determine its specific value. Collectors often pay a premium for unique minting errors, making these coins particularly sought after.
1989 is common -- they minted over a billion of them -- it has no added value
Mis-stamped coins often have value over and above theri face value for collectors. However it is difficult to say for sure about the value of a misprint coin without actually looking at it. Condition of the coin is very important in such cases, if it is mint condition it may be quite valuable, however it if is worn it may not be worth all that much.