Gary Marx Demo Tape

From Sisters wiki dot org - The Sisters Of Mercy Wiki Pages

A very small quantity of tapes including some studios and live materials to promote the band was distributed in 1981 ...

This is one of these tapes.

Could be, at least. We are not yet certain, whether this is not a fake.

Anyway, this tape (or a tape as such) could well have been the basis for early bootleg releases like - for example - the Floorshow EP or the Green Eldritch.