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From my old TV control room days - these tubes removed from service (preventative maintenance only) were free to the taker and perfectly good. At one time I operated a 400 watt transmitter that used these tubes, and they were working when stored. They glow a deep purple that fluctuates that pulses as the power that the tube is supplying fluctuates.FROM AI
\"The Vintage General Electric 872A Half Wave Mercury Vapor 10,000 V Rectifier is a rare and collectible electronic component from the United States. This rectifier tube, made by General Electric, is designed for vintage audio and video equipment, showcasing the brand\'s quality and craftsmanship. The GE 762A model is a valuable piece for vintage electronics enthusiasts looking to restore or enhance their collection of consumer electronics.\"
The plate cap is missing from this tube.
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