If yours was like that, then it was fake.
Was there ever an oldie SAK made with the squared off phillips and a corkscrew on the backspring that could be what it was?
Those are horrible fakes!!!!Very similar to my "first SAK" I got when I was 8.The corkscrew broke off of mine when I tried to use it, the first time.
So basically, TurboV21 - what the guys have already said.
This would have been around '92/'93 and it was less than $30 dollars.