This is the very first knife produced by SOG SPECIALTIES, which later became SOG Specialty Knives and Tools, and cost $495 back in 1986. As indicated in the advertisement in the June 1987 Soldier of Fortune magazine (magazine pic & ad included below). The knives numbered 005-025 were $495 and included a presentation case and knives numbered 026-100 were a much better bargain at $295. Therefore, the stamped number on your SOG Bowie does play a role on how valuable it is.
Our flagship is a replica of the original knife used by the Vietnam War Eras 5th Special Forces Group known as the Studies and Observation Group (SOG). Secretly developed and used in covert missions, the SOG Bowie was a steadfast companion in one of the harshest environments in the world. Made in the same factory as the original, the SOG Bowie has become a classic knife for enthusiasts around the world and is unparalleled in authenticity and quality. Like the original, it has a gun-blued carbon steel blade and an exquisite epoxied, stacked leather washer handle. The thick blade, deep hollow grind and faceted reinforced tip make this an appealing field knife to be used for a variety of tough chores and missions. It is also one of the most collected pieces by knife enthusiasts around the world. It carries in a high-quality leather scabbard equipped with a special sharpening stone and also comes with a classic leather lanyard.