My thought, too, was that it was a local ad or herald, especially with the film titles on the reverse. Was it common for heralds to also feature other titles and imagery on them? I always believed a herald was designed and printed for a specific title only? Or is it because this was printed for and by the specific theater?
And they chose to add "Coming Attractions" on the flip side?
My thought, too, was that the seller's lashing out was due to the fact that he KNOWS what he is selling is not what he claims, and he bristles when asked about it.