Spot the difference: One of these USPS holiday stamps is not like the others [photo]

http://twitter.com/#!/RennaW/status/403298736803430400

This holiday stamp mailer is brought to you by the U.S. Postal Service. Notice anything missing?

http://twitter.com/#!/RennaW/status/403300867824447488

Well, we’re certainly looking forward to celebrating Merry Gingerbread House Day! Aren’t you?

http://twitter.com/#!/ChrisBarnhart/status/403299045986156544

Read more: http://twitchy.com/2013/11/20/spot-the-difference-one-of-these-usps-holiday-stamps-is-not-like-the-others-photo/