[technoman9]

The oldest video tapes I have are several Magenetic Video Betamax tapes I found at a junk shop (literal) about 14 years ago. I believe these were among the first movies ever released on tape for home consumption. The copyright date on them is 1977. The Hello Dolly one is still in its shrink wrap though it's ripped in several places.

The oldest recordable video tapes I have are a Zenith Betamax cassette and Panasonic VHS cassette whose sleeve graphics suggest very early 80s to me, though I'm not sure when they were made. Still cool though.

And the oldest audio tapes I have are two Memorex recordable 8-track cartridges that are still in their shrink wrap with Musicland price tags.