Crumbly RS capacitors.
We're all familiar with the horrors of 1950s/1960s brown- and black-Hunts moulded capacitors whose encapsulation crumbles away like a vampire-exposed-to-daylight.
But it's not just Hunts that suffer this way: here are a couple of photos of early-1970s RS capacitors that have clearly passed-over to the dark side....
Not what you want to see in the grid-coupling capacitors to a push-pull pair of 6L6, I think you'll agree.
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