[leijggigf]

Google "Texas International Pop Festival 1969" and the first thing that pops up is a picture of the poster (...it's for sale on that site. There are a lot of other sites for the Pop Festival as well...).
You can't mistake it for anything else-- it's a big 'ole peace sign with a zeppelin floating around it. They want $130.00 for it.

It's groovy, dude...

And, stache, the process used on the very early video tape format was a simple one-- it basically involved scattering charged particles on the tape face into patterns that later are translated into images by the machine's "read" head. The tape was huge, like a man's belt, and it was fed into a microwave-oven-sized, top loading VTR in cassettes that were the size of encyclopedias.
Yup, that was a "T".
It stood for "Video Tape Recorder".
It was stone age, a brand new technology, developed by RCA in their skunk labs in New Jersey, I think.

The tapes we made were immediately cloned onto other tape.
We discovered that an early tape had a life of about 20 plays before it degraded. That's why, if you had a favorite scene involving, say Ginger Lynn and a Doberman, which you play over and over on the VCR...anyway, that's the most noticable way to see if a tape has deteriorated--watch a favorite scene and see what has dropped out since the last time you saw it.
- And over time it WILL demagnify, but the tape itself will probably be degraded by then and you won't be able to play it to find out.

By 2015, all the old video tapes should be as brittle as week- old stretched taffy.
If you have a favorite old cassette, you should duplicate it to digital while you can...

By the way, when my project was finished and the company was done with the hardware, the bosses decided that we had no use for the stuff and they sold the patent rights AND the equipment (most of which had been invented in NY/ NJ ) to, um, SONY, who went on to miniaturize our old equipment and sell a billion of them back to us as VCRs...