Craig
I consider the 1910 COUPON cards as another T-brand of the T206 family.
The identical T206 fronts (with BROWN captions)....the stylistic design of their backs that is identical to the AMERICAN BEAUTY,
BROAD LEAF, CYCLE and DRUM backs......and, their (circa Spring/Summer) 1910 issue date indicates to me that these cards are
indeed T206's.
Other collectors may differ, and that's their prerogative.
Best regards,
TED Z