There is a website, World Series Rings, which is a pretty good catalogue of all, or at least most, of the World Series rings since 1922. River Ave Blues put up a picture of the Yankees’ ‘96 ring and a link to the site last night, but I have put together a composite list of all of the Yankees’ rings.
To see the pictures in better details and to see quite a few pennant winning rings you have to check out the website, here.
Update: Here is a picture of the 2009 ring. I like the ’96 ring more, but besides that this is my favorite of the most recent rings.