I like Pat's diagram (post #151).....as it is similar to some of the stuff I have been presenting on this forum regarding T206 sheet arrangements.
Although, the subject matter in this thread pertains to Piedmont 150 cards, any indicators in the 150, 350, 460 series enable us to figure out the
possible sheet structure.
For example....illustrated here is my hypothetical simulated sheet of T206's that I refer to as the Exclusive 12 subjects (460 series). My research
suggests that these 12 subjects were printed separately from the other 460 series cards. And, on a standard 19" x 24" cardboard sheet in such a
configuration.
Incidently, the length of this sheet (24") could accommodate a 9th row of T206's....which results in a 108-card sheet.
.
l<..................................... 19" wide x 24" long sheet ......................................>l
TED Z
.