RPK 22cm Russian Prison Knife Vintage Coilspring Gunstock shape automatic knife

RPK Russian Prison Knife Vintage Gunstock switchblade knife believed to have been made by inmates of Russian prisons back in the 1950s through 70s to be sold to raise capital for the prisons, or given as gifts or bribes by prison personnel. They are all hand made and very unique and beautiful pieces of Russian cutlery Folk Art. This knife measures 22cm (8 5/8 inches) open and 4 5/8 inches closed with steel decorated frame with gunstock shape. The saber grind wavy curved clip blade is full with original finish and no markings. The black synthetic handle (scale) slabs are in good condition. The knife works well with blade tip deep and centered, strong snap and excellent lockup. EX- condition.