Scarce Cuff Size Berdan's Sharpshooter's Hard Rubber Goodyear's Eagle Button

Picture is dark and the button is much nicer in person. Fine non dug cuff size Goodyear's hard rubber eagle cuff button. These hard rubber buttons were worn by Berdan's Sharpshooter's. The sun did not reflect off these buttons the way it did off brass ones. The front has a spread wing eagle and the reverse has a raised GOODYEAR'S P=T N. R. Co. backmark. The brass shank is straight. Measures 15.5 mm in diameter. $175