Schrade Cut Co Large Double jigged bone Spear/pen vintage automatic knife

Vintage Schrade Cut Co large double with jigged bone scales made in Walden, NY sometime between 1916 and 1946 and is the largest of the three sizes of two bladed switchblades made by Schrade Cut Co. It's a model #7503 with spear/pen blade combination and measures 3 3/4" closed and 7 7/8 inches with both blades open and it has brass liners and nickel silver buttons & safeties. The spear blade is 97% full, or better and shiny with light scratches and is stamped SCHRADE CUT CO WALDEN, NY on the tang and the pen blade is stamped US PATS DEC 21, 09, SEPT 13, 10 & JUNE 6,16 and is mostly shiny with some light scratches. The jigged bone scales are in excellent condition with no cracks or chips. The knife works well with both blade tips seating below the liners closed, both open fully most of the time with very good lockup. Both safeties work. Needs light oil now and then. EX- condition.