Hillsboro, North Dakota. $10 1902 Plain Back. Fr. 625. The Hillsboro NB. Charter #3411. Very Fine.Track and Price reports just 9 notes reported for this Traill County issuing bank, all of which are large size. Just three auction records appear in their census, with the last note selling in 2013, which is a testament to how tightly North Dakota collectors hang onto their nationals. The overprints and serial numbers remain an attractive dark blue color. The purple stamped signatures remain mostly legible despite circulation.