I've unhidden the black labels because I've been investigating.
It looks like there were 2 pressings of the "Warpig" label version.
The black labels have an A side matrix BSS 101 A-1 with the tops of the text pointing at the label.
The brown labels have an A side matrix BSS-101-A2 with the bases of the text pointing at the label.
It would be interesting to know what the 1983 pressing has as the A side matrix.