Inox PATENT 21cm Italian Swing Guard vintage 1960s automatic knife

Vintage Inox PATENT 21cm Italian Swing guard switchblade knife made in Italy in the 1960s or 70s. The knife measures 20.5cm (8 1/18 inches) open and 4 3/8 inches closed with D stamped brass liners & pins and nickel silver bolsters, guards, button & safety cap. The flat swedge blade is 100% full with original finish and some very light scratches and the ricasso is stamped Inox in cursive with the reverse stamped PATENT. The genuine horn scales are mostly black and in great condition. The knife works great with blade tip below liners closed, Strong snap and tight lockup. Does not rattle if shaken when open. Safety works. EX+ condition.