I sent two cards and received two autographs in the mail several years ago. One was on a 2001-02 Topps and the other on a 2001-02 UD Playmakers Limited.
Shanahan has an interesting signature to say the least, although I do like how much of the card it takes up and the addition of his number after it.
These two cards were sent separately at different times to Shanahan c/o The Detroit Red Wings at the Joe Louis Arena address. Also, I have no idea how long either of these cards took to get back to me.