Dug New Hampshire Civil War State Seal Coat Button

Dug New Hampshire Civil War State Seal coat button. It has a nice clear and detailed front with a deep blackish brown patina. It has a c. 1850's RMDC * SCOVILL MF'G CO * WATERBURY. backmark. The shank is bent to the side and in a bit. Very hard to find dug Northern state seal coat button. Measures 23 mm's in diameter. $160