[Abravefan11]

John - Congratulations on putting together such an impressive run.

The Blank Back and Old Mill - Brown backs are both printers scrap and never issued in a pack. For this reason I can understand why some wouldn't consider these backs necessary for a complete back run. I personally feel like they've reached a level of acceptance within the T206 collecting community that I would want to own an example of each if I were going to complete a back run. If SGC is going to list a Blank Back on their registry then Old Mill - Brown should be listed as well. Either include or exclude both.

Sovereign - Apple Green should definitely be added as well. The color change from forest green to apple green was a conscious decision made during the printing process. It's no different than the color change on the Hindu backs except the Sovereign color difference wasn't as drastic and didn't have as much time pass between changes. But the two colors were printed during two different times in production on two different groups of subjects.

I'm 99% sure the Cobb/Cobb was not part of the issue that most of us call T206. It's just my opinion based on everything I know at this time about the subject but others will and do feel differently and that's OK.