Very good exterior condition, bore has good visible rifling and shine to the naked eye, but appears to have frosting (dull, hazy, or grayish appearance inside the barrel. It is typically caused by micro-pitting). Importer marked. Matching numbers receiver, bolt, stock, and magazine cover. SERIAL NUMBER: U-679408. The Yugoslavian SKS Model 59/66 is a Cold War-era variant of the Soviet SKS. Differing from the Russian variant the 59/66 barrel has an integral 22mm spigot style grenade launcher, fold-up ladder sight that also acts as a gas cutoff, so the rifle can cycle heavy dummy or live rifle grenades and folding blade style bayonet. Serial Number: U-679408