INOX 33cm Italian Stiletto vintage 1980s Dark Horn automatic knife

Unmarked Italian swivel bolster stiletto automatic knife most likely from the 1980s. Measures a little over 18cm (7.25 inches) closed and 33cm (13 inches) open with brass liners that extend behind the guards on the top rear bolster only. Also that bolster and two others are made of Nickel silver and the top front bolster is stainless steel. I've seen this on other knives from this period (1980s & 90s). The flat grind blade is full and retains all of the original finish and was likely lightly stamped INOX on the ricasso originally, but might have been sterile (unmarked) from the factory. Very nice dark buffalo horn scales are in excellent condition and are mostly black with a little light streaking. Works like new. Blade tip deep in the well, strong snap and tight lockup! This is a swivel bolster knife so you press the button to open and you push down on the right finger guard on the top front bolster to release the blade to close. Safety works. Nearly new condition.