Are you just stumped?

How come nobody ever guesses on my Trivia Tuesday's? Is it when you go on my blog your mind just goes blank at the sight of trivia? Not only have I not had a comment on Trivia Tuesday I have not had a comment for over a week. Do I seriously have to complain on my own blog to get you to comment? pathetic. Ok so instead of me complaining every week I will hand out prizes to the winner. Sound good? Ok now guess away. If more than one person gets it right it will be the fastest one who wins.

Did you get it right?

The numbers '172' can be found on the back of the U.S. $5 dollar bill.