I think it's easier to place the Cobb/Cobb card (IMO) with the classification of T206 because it is a sole card, rather than a whole series of cards.1 card (Cobb/Cobb) versus 68-70 cards (T213-1),,,,I don't know the final count on the series, I hope I'm in the ballpark.
You can place a one card set with what it resembles the most-or not. But when you have a set of cards with three distinct series involved, and just decide that because one series closely resembles another set, so lets re-classify it..............doesn't make sense to me. But to each their own- I do see the similarities, and feel if there wasn't a series 2 & 3 that the series 1 may well have been included into T206. The frame around the back Coupon add is identical to the Broad Leaf, American Beauty (frame) and Cycle.
More mysteries than answers with these tobacco cards
Sincerely,Clayton