This is a pre-1986 Buck 105 Pathfinder made in El Cajon, CA. It features a blade made of 440C or 425M and a black phenolic handle with a flap sheath. It comes in the box with papers and sheath...
This Buck 102 was made in El Cajon, CA circa 1970s. It features a stainless 440C blade with black phenolic handle with four spacers and comes with the original sheath, "How to Sharpen" paper in the original box.