These are some pennies I had in my pocket. Fascinating! The one on the left is a wheat penny, which if this site is to be believed, is worth about 3 cents currently. Apparently 1909 was the year to save them, not 1957 as in this case.
More than the wheat penny issue, notice how Honest Abe changed over years. Is it just me or does the modern incarnation of The Great Empancipator look like he's sourly smirking?