7JP4 Tube Grading

[dieseljeep]

Originally Posted by Tubejunke

So by New York City's official grading, RCA2000 would be correct in his mention of a "pull in unknown condition." This leads me to a couple of questions. First, who is New York City in relation to CRTs? Second, why would someone market these "Grade C" tubes for resale based on that description?

Perhaps there are other criteria involved in this such as a "Grade C" being a pull from a decently working set with some other problem that made it more lucrative to part than to sell as a set. But if CRTs were your business, one would think that you would have the capability to test one. Then you could have at least a smidge of security to offer the buyer that the tube might work.....

I've seen that grading chart, on the back of a Sears parts invoice.
I thought when I read the "Grade C", I wonder if they scrapped the sets, that were damaged in transit or it might have been sets that no one was able to repair properly. This was at least 40 years ago.