Gentlemen,
I was attempting to make an inventory of my copious spares collection because I can *never* find what I want when I need it among the sheer vastness of my stash. Whilst attempting this quest worthy of Odysseus, I came across some old valves ("toobs" for our American friends) which I've not seen before and was wondering if anyone here recognises them. I can't ever remember seeing valves with radial pins (plugging them in must have been a challenge) but we learn something every day, I guess.
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