OK, going from a near 40-year memory, this is what I remember the panel in question being like.
The top shows what each cyborg looked like (remember, very similar to the Mad Thinker's android from Fantastic Four vol. 1, #71). Green colored, with the "skin" being like a green fabric covering the entire body and obscuring the face, as shown. Likely, the face was NOT completely blank, but showed rudimentary features, like a human face would if covered by a thick green, skin tight fabric.

The bottom shows what the panel likely looked like, with an image of the (green) cyborgs coming off the "assembly line" and the narrator describing the production of cyborg workers.
Perhaps, then "faceless" is not the best description - obscured featured may be better.
I believe the general idea is clear.
The top shows what each cyborg looked like (remember, very similar to the Mad Thinker's android from Fantastic Four vol. 1, #71). Green colored, with the "skin" being like a green fabric covering the entire body and obscuring the face, as shown. Likely, the face was NOT completely blank, but showed rudimentary features, like a human face would if covered by a thick green, skin tight fabric.

The bottom shows what the panel likely looked like, with an image of the (green) cyborgs coming off the "assembly line" and the narrator describing the production of cyborg workers.
Perhaps, then "faceless" is not the best description - obscured featured may be better.
I believe the general idea is clear.