I recently found these cassettes on Ebay and bought them they must be from the early 80,s I haven't seen any before just wondering if anyone else has any? Here's some photos.
The blue one was already opened but other 2 are still sealed as you can see.
Thanks DocP and Drmz they are very nice and cost me less than £10 for the 3, which I think was a bargain, the 2 sealed ones will stay that way as I do collect and have a large number of sealed tapes from mid 70's to early 90's.