Ah, the 1979 American "silver" dollar! Let's address the elephant in the room first: despite its hopeful nickname, this coin is about as silver as a tin can. The 1979 dollar, which features the trailblazing Susan B. Anthony, is actually a copper-nickel clad coin. This lack of precious metal, combined with its uncanny resemblance to a quarter, made it famously unpopular upon release.
Because of this, and the sheer number of them minted, the vast majority of 1979 Susan B. Anthony dollars in circulation are worth exactly what their face value suggests: one dollar. You can spend it on a vending machine snack without an ounce of collector's guilt.
However, don't toss it back into your change jar just yet! There's a particular variety that treasure hunters seek. Examine the rim on the front of the coin. If the date "1979" is nearly kissing the raised edge, you may have the coveted "Wide Rim" or "Near Date" variety. These are scarcer than their common "Narrow Rim" counterparts and can be worth anywhere from $5 to over $50, depending on their condition. The much more common version has a very distinct gap between the date and the rim.
So, while the provided search results correctly identify the coin in question, they don't give the nitty-gritty details on value. The short answer is that your coin is likely worth a buck, but it's worth taking a second to check that rim. You might have the one that's worth a whole lot more than a lottery ticket.
