AK47 21cm Soviet style Vintage Swing guard wood & blued automatic knife

AK47 Soviet style 22cm Automatic coil spring knife w Blued steel & wood scales measures 22.2cm (8 3/4 inches) open and 4 3/4 inches closed. All the metal parts including the coil spring are blued and in great condition with the exception of the blade & folding guards. The Saber grind drop point blade appears to be full with patina & spotting with no markings. The wood scales are in excellent condition. The knife works well with blade tip even with liners closed, STRONG snap and very good lockup with about 1/8" up and down at the tip. Does rattle if shaken with blade open. I don't know who made this knife, or when. It is a very strong spring and you need to be careful both opening and closing this one because of that. If you have your finger in the wrong place (touching the spring) when you open the knife, it might bite you. Blade release is very stiff and takes a little practice to operate. VG+ condition.