Washington, District of Columbia. $20 1882 Brown Back. Fr. 504. The Central NB. Charter #2382. PCGS Very Fine 35.,A beautiful note on the District of Columbia, a location rarely represented by a Brown Back series type note. The note presents very nicely with pleasing color, bold brown overprints and nice penned signatures of the bank officers. Just 21 $20 Brown Backs are known for the entire District of Columbia , this being most certainly in the top 20% and probably higher when talking strictly eye appeal. A note that will likely be cherished by its new owner for many years. <p><p>,,