Both scales have a semi-circular thumb notch. Spear blade with long nail nick and pen blade on one end, removable shackle on other end.
Sheep foot blade with long nail nick and pen blade on one end, large, permanent shackle on other end. New York Knife New York Knife Co., located in Walden, NY, made official Boy Scout knives from 1911 until going out of business in 1931.