Hi the links above did not work for me I think you need to add the dot com after ebay. I remember Sam Snead but do not know his signature that well. I see they have several personal checks of his on there.
That is no problem I think these two links here will work. I wish I could help you with the signature but have never studied him. I love checks myself because they are all but foolproof in authenticity. Hope someone who knows will chime in here with an opinion on these for you.