Even though these heavy sizable coins are not particularly valuable and popular nowadays, some collectors prize them. Ike dollars never circulated widely throughout the US, and their primary use was in casinos along the west coast. Another option is the so-called Brown Ikes, a proof set provided in brown boxes. One is Blue Ikes, coins from regular strikes in a blue envelope. Even though both contain 40% silver, there are two versions with different purposes. The 1972 silver dollar value depends on the coin type you want to buy.
History of the 1972 Eisenhower (Ike) Silver Dollar.