C JUL HERBERTZ ROSTFREI 21cm German OTF DA vintage switchblade knife

Vintage C JUL HERBERTZ ROSTFREI 21cm OTF DA switchblade knife made in Italy in the 1970s or 80s to be sold in Germany. The knife measures 20.6cm (8 1/8 inches) open and 4 7/8 inches closed with non magnetic coated metal frame. The spear point blade is 100% full with factory finish and the tang is stamped C JUL HERBERTZ ROSTFREI. The coated metal frame is in very good condition and the word Herbertz on the front in white script. The knife works perfectly with blade opening fully and locking when the switch (knob/button) is pushed forward and fully retracts into the frame when it's pulled backward. EX+ condition.