Are all of these NOS tube inventories real? How have we not consumed them already?

Wow very interesting and thanks everyone!

Sounds like there indeed are that many real examples of NOS tubes out there and some have literally stockpiled enough to take them to the grave. 
@dill if you could take a pic or two and post, it would be wild to see even a fraction of the 30k tubes in that collection. :) 
Continued happy listening! 

Thanks all. Yes I was asking about new old stock not NIB. The whole NOS moniker seems to be everywhere from 5-6 large scale retailers and many other smaller specialists. 
I was able to get what was listed as new old stock circa 1969, with measurements and a taxonomy of the screen printing on the tube that I cross verified prior to purchase, and after 4 days use it really is beginning to sound amazing. 
Ironically though, after buying what was marketed as a single item, the dealer has more... so I thought hmmm.