Ooh, yey!! Another trailer!
Oh, yeah..the question...
In Ultra Woman when Clark tries to stop the mugging in the alley without his powers. The bad guy flips out his switchblade. Not sure how close up it gets to the knife...but it should be identifiable from what I remember. Then there's always Soulmates...I think 'The Fox' uses a little knife when he doesn't have his sword...or something. Though, I'm not sure you'd want Clark holding it.
Hope one of these works, Pel!
Sara