[djson1]

Regarding the signature pic posted by Shelly: This COULD be Koufax' signature. No doubt, this is an awful (and I mean awful) example, but that being said, the pattern in which he signs his name seems to be reflected in this example (ie- the pattern in which he makes his "S", the "y" and the final "x"). As somebody noted above, if it was rushed, then why the best wishes? Was he drunk? I'm not trying to be funny, but I have seen my signature on credit card receipts signed when I was really drunk or tired and it really doesn't look like my signature at all. but the basic pattern was there in which I sign my name. If Koufax DID sign this thing, then he was not his usual self or was very unstable.
@ScottGarner: That's pretty insightful. You mean, because he signed the holiday card with a Sharpie, instead of like a pen, like most people would? I never thought of that....but that's interesting. I actually thought that signature on the card was a nice example, but your point does raise a flag (unless he was in the midst of signing other items with a Sharpie and just happened to grab something on his desk to sign the card).