This is a rare vintage Rigging knife made in Japan circa 1960s-70s. Made in the early years of the modern Seki knifemaking era, it features an all stainless construction. Marked "Stainless Steel", "Japan". It features a rigging spike, blade is tight with nice nice snap. Marlin spike locks open by rotating the bail gently towards spike to face parallel with it - interesting unique design. In good unused condition with light handling wear and staining. Came from closed knife store in Seki and has old price tag on it.