Perhaps you could contact W/E in Georgia and ask if they perform this service?
Second choice would be Uncle Kevin at Upscale Audio in Los Angeles.
Good luck.
WE 300B tubes
Not sure if this is the place, but I have (4) Western Electric 300B tubes. My dad was an amp design guy ( Ted Hammond from NYAL). I would like to sell them but I don’t know how to go about it as they are not tested- obviously I am aware of their value if they’re in good working condition.
Thanks
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