This new discovery quickly jumps to the head of the class in terms of grade and desirability for this North Carolina bank. The note has a single horizontal fold through it to account for its AU grade. A toned and circulated PMG 25 #1 $10 sold at auction in 2014 for more than $6,000. This makes just two serial number one notes on the charter, and it is the only #1 $20 note.