I used to play with these back in the actual Cold War, in West Germany --
aahhhh, good times!!! I would sharpen them straight-razor sharp and one of my buddies would see it and have to have it. I'd sell it to him at my cost, then go buy a different model to play with. Unfortunately, I was afraid to bring any back due to the prevailing ignorance about "switchblades/legality" in the US at the time. I have seriously regretted
that I didn't bring one home ever since. Lessee, that would have turned 40 years ago, just a couple of months ago...

Congrats on your nice knives!!!
John