I bought a pair of those 3 weeks ago in Italy!!!!! Nike Vintage AC Tennis!!!! Exact same as the original ones from 1974 - 1982 with the Lt Blue swoosh and the retro box.
My old tennis mags from the 1970s show plenty of full page ads for adidas and Puma, but no Nike. I never knew they 'marketed' a 'dedicated' tennis shoe as early as then. I always assumed they slung Gerulaitis and McEnroe the light blue Swoosh'ed Bruin Lows as an afterthought. Would be interested to see any ads or promotional efforts for this shoe but I doubt any exists.