The 1972 Type 2 Eisenhower Dollar is the key coin to the entire series. This variety was only struck from one known reverse die. This is one of the primary reasons why there are so few examples available compared to any other date and mint mark of this series. All 1972 Eisenhower Dollars should illustrate several countries or islands below Florida but on the 1972 Type 2 coins the islands are very flat and almost indistinguishable.
The 1972 Type 2 Eisenhower Dollar was accidentally struck with a reverse die intended for proof coins only. A typical circulation strike die producing Eisenhower Dollars at the time was producing about 100,000 coins each. Therefore, more than likely less than 40,000 coins of this variety exist in all grades combined since many of them circulated and have considerable wear making them hard to identify. Also, many others coins have been lost over the years.
MS65: In MS65 it is a very difficult coin to obtain and commands thousands of dollars.
MS66: In MS66 grade it is practically unheard of and it usually brings well in the five figures.