I didn't realize it either, there was no indication that my expiration date wasn't valid. By the way on the Mastercard on Chrome 28 on Win 7 it shows the CVC o

I didn't realize it either, there was no indication that my expiration date wasn't valid. By the way on the Mastercard on Chrome 28 on Win 7 it shows the CVC on the top left corner of the card so that the text overlaps with the border. On my Mastercard atleast the CVC is in the middle of the card.