Mariner 7 flew by Mars in early August, 1969.
The first set of images are far encounter images. Except for the last few images, which are in color, they were all taken with the narrow angle camera. The wide angle camera had a filter wheel allowing color. However, due to the fact that they were taken just before near encounter, they had to be transmitted in real time, so only one in seven pixels were sent back, with a missing stripe in the middle of the image. Stacking somewhat compensated for the missing pixels.
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