Great record - just have to find the box it's still packed in!
Yes, it is the first "official" BOB record, though was preceded by The Chris McGregor Group - Very Urgent (Polydor, 1968), with Feza, Dudu, Ronnie Beer, Dyani and Moholo, and before that, a record on Gallo Africa, the name of which escapes me.
But for fuck's sake, "MRA" absolutely slays!