Ah, see, I would've assumed the turquoise was first. Both copies I've had were black text on a white label, but had the original cover design.
I've seen the turquoise label on Incus 1, 2, and 3/4:
The black label was used on Incus 5-11. The white label (non-beveled) on 12-32, and the beveled white label came around in 1980 with Incus 33. At least this is my understanding.