Re: Has anyone seen a valve like this before?
The pins on the Acorns seem to be quite prone to corrosion; I've seen some real stinkers. In valves in the UK, this might date back as far as crossing the Atlantic deep in the bowels of the Liberty ships! The ones with the worst corrosion have often lost their vacuum (are we back to 'oxide jacking' again?). I think that the cardboard used to pack them seems like it might be prone to holding dampness. Anyone with NOS Acorns, especially in the original boxes, might consider checking them and perhaps wiping some Vaseline on the pins. Even acknowledging their shortcomings, I think they score pretty highly for something made back in the 1930's.
B
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