W It is a counter stamp someone put on it. Maybe their initial or where they are from. can't be sure why but some people like to brand their coins.
President Dub-ya heard that he wouldn't be on one of the new Presidential Dollars since he wouldn't be dead long enough before it would be his turn so he has started making his own "Presidential Dollars" and this is what they look like! A big W stamped onto a Morgan. lol Honestly, you are unlikely to find out who put that there or why it was put there, but it's kinda neat anyway.
