I Got an Old $10 Bill as Change Today

Today I bought something at the store and received this as part of my change. I can't recall the last time I saw one of these $10 bills.

I'm so used to the newer design that this old one looks fake. I had to do a double-take when I saw it.

What about you? Do you prefer the new bills to the old ones? Maybe you have a tweak you'd want done to all U.S. currency? Let us know in the comments.