Press Button Knife Co medium double MOP pattern 105 antique switchblade knife

Antique Press Button Knife Co medium double MOP pattern 105 switchblade knife made in Walden, NY sometime between 1892 and 1923 it measures 3 3/8 inches closed and 6 15/16 inches open with brass liners and nickel silver buttons & pins. The blades are both 96% full, or better with patina, light scratches and light pitting and the tangs are stamped PRESS BUTTON KNIFE CO WALDEN, NY and the backsides are blank. The Mother of Pearl scales are Gorgeous, but the front scale has been professionally replaced at some point and is a little whiter than the back scale. The knife works pretty well with strong spring so both blades kick back, but both lock up well in the full open position. VG+ condition.