Was Mercury 72963 a regular release? Update

In November 2013 we finally gave up. For decades Morten Reff and I had tried to find a regular copy of Berry's fifth single for Mercury It's Too Dark In There / Good Lookin' Woman (Mercury 72963). While you can buy white-label promotional (WLP) copies of this single easily, we never even saw a regular copy with the commercial Mercury label.
The regular red Mercury label. This one:

Yes, it exists! Who else but reader (or shall I say contributor) Thierry Chanu found this absolute rarity!
This is the only copy of Mercury 72963 having a regular company label we know of. It came to him in the paper sleeve of the promotional copies, Thierry remembers.
So this still does not answer the question whether It's Too Dark In There / Good Lookin' Woman was ever sold in stores. It still may be that even this copy was sent out by Mercury as a promotional item. Until I see other red label copies offered in used-record shops or on the Net, I continue saying that this single was announced only but never sold. Convince me ...