Ultra-desirable Series 2017 one dollar bill, signed on the left side in black felt tip by Elon Musk. In very fine condition. Encapsulated in a PSA/DNA authentication holder. Musk placed first on Forbes' 'The Richest of 2022' list with a net worth of over $230 billion dollars—if converted into one-dollar bills, Musk's wealth would tower into outer space at over 156 miles high.