The coin needs to be seen for an assessment, take it to a coin dealer.
If it's a true hub double retail values are $920.00-$2,100.00 for a circulated coin.
A US quarter has a face value of 25 cents.
It's just a quarter spend it.
The double die error on the Wyoming quarter is so minute that it is very difficult to see without the aid of a magnifing glass. Errors that have a high value are usually those that are easily seen by the eye. Those like the Wyoming quarter are of interest to error collectors but the public usually has little interest in an error on a coin they can't look at and see it. Since it is the demand for the coin that sets its value, this difficult to see error will probably not have a very high value.
The first US quarter was struck in 1796.
It depends on what the grade is.
No US quarters were struck in 1922. The US did not make ANY quarters dated 1922.
The bicentennial quarter is extremely common, still worth 25 cents.
Almost 2 BILLION were struck that year, spend it.
Do you mean a quarter DOLLAR? Quarter eagles were not issued in 1968. And could you describe "double 'stamped"" ? (note the term is actually "struck" in coin jargon).
the second dot adds one quarter of its value
This is a novelty coin and was not made by the US Mint it has no numismatic collectible value.
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?
Two types of US quarters were struck in 1916 a Barber quarter and a Standing Liberty quarter. Post new question with type of coin please.
If you mean it has no Mintmark, value depends on the year it was struck.
Blank quarter planchet; Silver planchet-$35.00 compound planchet-$4.00