How do you know if the 1979 dollar coin is a type one or two?
The type 1 and type 2 1979 dollar coins pertain only to proof coins and refers to the mint mark. The mint mark will always be an "S". The type 1 mint mark is called a "filled" mark because the "S" has a smaller bottom curve than the top curve and lacks detail giving it a "filled in look. The type 2 is a more perfectly shaped "S" with the top and bottom curves being more in balance and the mark has far greater detail than the type 1.
The difference is in the 'S' mint mark which is found on the left side of the coin just above her shoulder. The Type 1 dollar's 'S' is like a blob - it is not well defined and is somewhat fat. On the other hand, the 'S' on the Type 2 dollar is more clearly defined and is clearly an 'S'. The Type 2 dollar is much more scarce than the Type 1 dollar.
First of all, there is no such coin as an E PLURIBUS UNUM coin of any type!!!! E PLURIBUS UNUM is the NATOINAL MOTTO that appears on all most every coin ever made by the U.S. and all modern coins from 1938 to 2012. A one dollar coin dated 1979 is a Susan B. Anthony dollar.They are only slightly bigger than a quarter and none of them were struck in silver. The coin is only…
You are talking about an extremely rare occurrence for any coin. I would need to know the type of dollar you have and date to estimate a value - a local coin dealer could give you a ballpark, but with error coins the value is in what a collector will pay. Needless to say if it is a genuine coin, it could have substantial value.