When Companion falls from his chair, Bergman puts the chair up. In the reverse shot, the chair is still on its side as Companion is helped up, and Bergman lifts it a second time.
Some of the shots of the Eagle firing are flopped left for right. Notice the reversed text of the "Alpha" badge.
The last Eagle to be blown up shows the SFX studio ceiling for a few frames.
When Koenig returns to Main Mission, the first view shows his spacesuit zipped further up than the second view through the windows (he also walks a long way round).
Copyright Martin Willey.