NOS tubes

@clearthink

That's a little harsh IMO.  Coming at me with insults, especially
when what I said is 100% correct.  The entire purpose of mass production is to cut costs, and today most of what is mass produced by the millions suffers greatly in quality as a result.  Modern manufacturers mostly operate on a much difference set of standards of acceptable quality presented to consumers.  We no longer have tubes being mass produced for military or laboratory equipment especially, so it is very safe to say that what is available to us today can not possibly meet those standards.  As I said before, there are exceptions to everything.  

@clearthink  - Wow, in seeing your other posts I don't feel so bad. You are just a very nasty person to everyone.   Have a nice day my friend!

cerecords

The entire purpose of mass production is to cut costs, and today most of what is mass produced by the millions suffers greatly in quality as a result.

That's actually a misnomer. The primary purpose of mass production is to reduce overhead as a share of a product's total cost of production.

Mass production can offer other benefits too, including interchangeable parts, just-in-time inventory and - believe it or not - quality control. Consider that next time you use your cell phone, or drive a modern car.

That is one side of the coin.  But you can't discount the other side as hogwash. 

Imo, like a lot of things back in the day, NOS tubes were made to a standard, not to a price as they seem to be these days