Here is a wonderful, example of this Buick Encased Silver Dollar! In fact, it is still in its original presentation case and possibly never even removed from it.
The Buick presentation encased dollars are very interesting. Encasements for large coins are scarce; though the Buick encasements are probably the most common type.
It has been generally cited that these encased Dollars were made around 1940 and distributed at the New York World’s Fair at that time.