Fr. 1959-Lm637. 1934C $5 Federal Reserve Mule Note. San Francisco. PMG Choice Uncirculated 63 EPQ. Back plate 637. Unique. 1934C Mules from the San Francisco district were unknown until 2018 when this note was first discovered. And what an example it is: fully fresh and bright paper, sharp corners and nice dark inks stand out on this elusive mule. PMG Pop 1/No others graded. From the Laguna Coast Collection Part 1.