Because George McCann had foresight and an appreciation of coins that almost no longer exists.
The Mint is trying to make coin collecting a hobby again. But who can get excited about the debased coinage that they put out today?
There is something definitely cosmic about silver and gold that is unexplainable. I have a hundred or so MS-63 (or better) Morgan Silver Dollars that I've collected over the years and a few St. Gauden's Double Eagles.........somehow a Susan B. Anthony Dollar (Yuchhhh!!!!) doesn't quite cut it in comparison.
I recently bought an 1887 NGC certified Morgan dollar in MS-63 on eBay. It come in the mail just yesterday. I also have a 1924 Double Eagle in MS-61. Since it's not unique like the 1933 $20, I only paid $420 for it.
100 silver dollars MS-63 or better. You must have quite the collection.