As before, "Pyramid" first played at Stafford (by Adam ?), then went BIG in the late 80s when the scene was very undergound again. reminds me of the 100 club. The record was booted to supply demand for the record, however with the addition of the previously un-issued "michigan move" it is something of an oddity as that has never been released on vinyl anywhere before !
Pyramid was taken from an original copy, done in London, and the labels cocked up on each of the 500 copies pressed ! As a detroit fan it has to be worth having to get the un-issued track on 45. they sold at £5 each when done around 1988/89.
Also thought this came out on Kent at some point (did it Ady ?)
Pity the masters aren't available for a clean copy to be issued.
As for anthing its worth as much as you want to pay for it, but don't be surprised if this isn't a future "collectable" in its own right.