We don't usually call printed advertisements commercials. Commercial usual means an advertising in a radio or television setting. Even advertisements in a movie theater don't tend to be called commercials.
There is a Color TV-Game commercial supposedly from 1977 (not totally clear whether this is the year of the ad itself or the year of the product launch) [1].
The commercial features the first two machines. There's many plausible reasons for this including, most prominently, that the third might not have been released yet.