INOX BREVETATTO 21cm Italian Trapdoor 1960s Checkered Aluminum automatic knife

INOX BREVETATTO 21cm Italian Trapdoor vintage 1960s Checkered Aluminum automatic knife measures just over 21cm (8 3/8 inches) open with nickel silver button and safety. The flat grind swedge blade is nearly full with some original finish and lots of light scratches and is stamped INOX BREVETTATO on the ricasso. The aluminum frame is in very good condition and both sides have a nice checkered crosshatch pattern for better grip. The knife works well with blade tip flush with end of knife closed, opens fully and locks when button pressed. Press button again to release blade to be closed and then cocked into firing position with hinged trapdoor. Sometimes these are a little finicky and takes more than one push of the trapdoor to cock the knife. Also best to move trapdoor out of the way before opening and hold knife level, or pointed down for best open. EX condition.