2.9 millions for 30 seconds of "work"?
It even isn't a good picture.
I hope the person/entity who bought it has a huge loss.
That would have been the days of glass negatives. More than 30 seconds of work.
And no photomat either. More time.
And stored for 100 years. More time.
Digital photography is the era of point and print (and they are not archival, as this image is).