There have been reports of full T206 sheets that were known to have
existed for a long period of time.
Supposedly there were a few that were destroyed in a fire that
was reported in this article.
http://t206resource.com/Article-T206...stique-34.html
And I think there's a good possibility that the large group of SC350-460
factory 30 "no prints" that were sold on ebay over a period of time by
the same seller were cut from a sheet shortly before they being sold off.