Ted,
That's a very interesting observation about the similarities with the C46 set. There are some definite parallels. Obviously the color scheme is quite similar and not used by any other tobacco sets of the era. C46 is a minor league set that features many players with major league experience while the T207's are a major league set featuring many players that barely if ever made it out of the minors. The quirky write-ups on the backs also seem as if they could have been done by the same writer(s) with many similarities in phrasing.
There was a discussion recently about the lack of evidence that the C46's were actually released by Imperial Tobacco so that also adds to the mysteries. I have many examples of other Imperial Tobacco hockey, lacrosse, and non-sports cards released during these years and none share major similarities in print design with the C46's.
Congrats on completing your set Mike! The T207's are my all-time favorite set. I have been working on this set for 10 years (and have gotten several from you during that time
) and I still need about 50 more cards. So I definitely can appreciate your difficult achievement.