The discovery of a new micro back 637 variety is always a red-letter day. Robert Calderman, author of Cherry Picker’s Corner for Paper Money and owner of the most comprehensive collection of 637 varieties, picked this really tasty cherry from a Facebook Group Auction in September 2023.
What he spotted was the first $5 1934C Federal Reserve star note from any district bearing micro back plate 637. It is a mule; that is, the size of the plate serial numbers on the face and back differ wherein in this case the face plate serial number is macro and the 637-back micro.
His find is G02184664* J230/637.
Federal Reserve notes with back plate 637 are highly prized because all are very scarce. Star notes with the variety are particularly revered because they are rare. At this time, two
