Thrift store tube find - CR25 tube worth keeping?

joeycuda

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I picked up a Goldstar model CMR-2030, from 1984

tube is 510NJB22, which the B&K application list shows as CR25

Is this worth hanging on to? Am I likely to come across an application for this tube? I suppose I can stash it in the attic, I was really hoping it was another CR23 type.

thanks for any advice-
 
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