BONSA SOLINGEN D.B.G.M ROSTFREI 23cm German OTF Automatic Trapdoor knife all metal

Vintage BONSA SOLINGEN DBGM ROSTFREI 23cm German Trapdoor OTF automatic knife most likely made in the 1960s or 70s. It measures 23.4cm (9 3/16 inches) open and 5.25 inches closed with non magnetic steel frame with steel button and safety. The flat grind spearpoint blade is 97% full or better with much of the original factory finish and some light scratches and you can still see most of the original etch with says BONSA SOLINGEN in a circle with ROSTFREI inside the circle and the tang is stamped D.R.G.M and reverse is stamped ROSTFREI. The frame is in great condition with little, or no wear to the pattern. The knife works well with the blade tip inside the knife when closed, opens fully and locks up well. Blade flies out to full open when the button is pressed and falls back when button is pressed to close. You reset the blade for firing with the trapdoor by pushing down on the trapdoor. Safety works. EX condition.