It's not only the T206 issue, but also the "12 Factor" is evident in the T205 printing format. There are twelve Minor League subjects in the T205 issue. These 12 guys where printed at the tail-end
of the T205 press runs (circa late 1911). How do we know this......because the bio info on the backs of 8 of these cards reveal this timeline.
Furthermore, some of our resident Net54 T205 experts have told me that the T205 structure lends itself to formatted sheets printed in columns of 12.
TED Z
.