This is NOT a real label:
This page catalogues counterfeit editions of releases originally on Sleeping Bag Records.
Exact counterfeit pressings of the Dinosaur L LP and 12" single have been readily available from the usual distributors ever since the actual label folded in the 1990's.
Needless to say, none of the counterfeits have mastering house IDs or engineer sigs in the dead-wax.