Posted By:
JimBdrc,
We think of Cobb/Drum as a back variation (if indeed there is one) because "T206" was catalogued as one set with 16 brand backs and 3 different series. What if they catalogued the Piedmont 150s as T240 for example, Sweet Cap 150s as T241, all Uzits at T242, etc. ? Though I agree with the way it was catalogued in general, arguments could certainly be made for the cards included in "T206" as actually many different sets by brand or series or both, etc. To some extent the designation as one set is arbitrary.
JimB