US screenings in summer 1977 probably wouldn't, but in the UK later that year? Perhaps.
Anyway, my main reason for doing this (as I've probably already mentioned) is that I recall seeing one for Empire toys - probably the second ad in the collection Raphael posted above, in fact - during the 1982 double bill so they were certainly shown theatrically at one point or other.
Reckon I'll swap in the 1978 Palitoy ad when I recompile - thanks for that Raph.