Just curious if they are worth anything above face value or if I should just buy a sandwich with them haha
Buy a sandwich For these not-so-esoteric notes, you'd need them in perfect shape, followed by a small miracle, to sell them. By the way, the "birthday numbers" usually are a year as well as month and day - 19510125
Keep trying maybe you can get a bill in great shape with numbers like 12121212 or something like that. or a radar note ie: 12344321. Just keep looking it will all of a sudden be there.