It's counterfeit
Not necessarilySometimes it's very difficult to find the date on a coin. For example, US $1 coins minted since 2007 have the minting date on the coin's edge rather than on the face. Some current low-denomination German coins have almost microscopic dates that are hard to see unless you have good eyes and know where to look.Check the edge of the coin for a date.
....There is a date on the coin, the date shows when the coin was struck. Without knowing the date or the design, it is impossible to answer your question.
If I understand the question, you have a Sacagawea dollar coin with no date on the obverse (front) of the coin and you think it should have a 2000 date on it? The coin was made after 2008. From 2009 to date, the year the coin was struck in is on the edge of the coin.
All coins have a date that they were minted, so by looking at the coin carefully, you will find the date the coin was minted.
look at the date on the coin.
It means that the coin is rare. For example a 1909-S VDB cent is a key date. This coin is rare.
It is the date it was minted (made).
Please post new question with the date, denomination and the symbol you see on the coin.
Which coin? what date? post new question.
Then that coin is a error and is worth a whole lot more than a dollar First look at the edge of the coin for the date & mintmark.
If it is a one dollar coin, the date and mint mark is along the outside edge of the coin, on the side. The mintage date is always 2007 on this coin though. Washington's presidency was from 1789 to 1797, but on your coin the date is worn down because it is in pore condition.
a date