To be honest, I don't recall what it looked like. Too many dead brain cells since then. It would have been the mid to late 60s.
No worries brother.
I looked for an UNCLE briefcase gun that could shoot from the briefcase, like some real (special) guns do; but found none. This was the closest.
As amazing as that was in the 60's, check out the latest (2016ish) in human achievement:
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Its not a 'sexy-sexy' video as the snap-cap might imply - its much better - human experience. Worth the watch.