Somersworth, New Hampshire. $10 1902 Plain Back. Fr. 624. The Somersworth NB. Charter #1183.2. PMG Very Fine 20.This is an appealing mid-grade offering on this Strafford County bank, from the tri-city area of Dover, Rochester, and Somersworth. The bank operated under two titles with this second title notes seen more frequently than the first, which is known by just three examples. It displays even circulation, some minor soiling and faded banking signatures. Overall, quite typical for this grade.