c. 1900 Ulster Knife Co balloon swell center pen pocket knife
Early Ulster Knife Co swell center pen knife. Both blades have the sideways Ulster Knife Co. tang stamp. Can’t tell if handle is natural tortoise shell or celluloid; there is no shrinkage of the handle as seen on synthetics. Knife measures 2 7/8″ closed. Both blades snap shut but the master is a bit slow. Very cool old knife!