February 12th marks 206 years since Abraham Lincoln was born in a log cabin in Kentucky. It's hard to fathom how the world has changed since then. To this day, Lincoln remains the most popular president on currency, with both the Lincoln Cent and the $5 bill bearing his likeness. But aside from the Lincoln currency we're all familiar with, Lincoln has been featured on some lesser-known U.S. currency as well. Here are some of the more uncommon pieces of currency featuring honest Abe.