Bob,
You could be right. By about 1970 the Sweets inserts stopped illustrating the 40" ranges, so I can't pin this down for sure. They did not resume including the 40" models until about 1977/1978 and by then they had the woodgrain consoles.
GE did include the infinite rotary controls on their upper-line ranges before 1975. Since this one has two ovens, the P7 feature, and a fluorescent light, it must have ranked near TOL, so it could be late 60's/early 70's.
lawrence