1978 Footage

Hello everybody,
look this image (Ahoy Rotterdam, April 20, 1978)

Does anybody know where can we find this interesting footage (seems to be like that)...

Thanks,
Cheers!

Hoarded

Sorry, I haven't understood (my english is bad),

can you explain me better?

Thanks

I doubt you will see a share as it is probably being hoarded by the collectors.
Hopefully I will be proved wrong.

Here's the definition of 'hoard'
past tense: hoarded; past participle: hoarded accumulate (money or valued objects) and hide or store away.

Ok, thanks...