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Da - Siemens & Halske Post Triode, very rare tube, seltene triode rohr rohre, US $1,200.00 – Picture 0
Da - Siemens & Halske Post Triode, very rare tube, seltene triode rohr rohre, US $1,200.00 – Picture 1
Da - Siemens & Halske Post Triode, very rare tube, seltene triode rohr rohre, US $1,200.00 – Picture 2
Da - Siemens & Halske Post Triode, very rare tube, seltene triode rohr rohre, US $1,200.00 – Picture 3
Da - Siemens & Halske Post Triode, very rare tube, seltene triode rohr rohre, US $1,200.00 – Picture 4
Da - Siemens & Halske Post Triode, very rare tube, seltene triode rohr rohre, US $1,200.00 – Picture 5
Da - Siemens & Halske Post Triode, very rare tube, seltene triode rohr rohre, US $1,200.00 – Picture 0
Da - Siemens & Halske Post Triode, very rare tube, seltene triode rohr rohre, US $1,200.00 – Picture 1
Da - Siemens & Halske Post Triode, very rare tube, seltene triode rohr rohre, US $1,200.00 – Picture 2
Da - Siemens & Halske Post Triode, very rare tube, seltene triode rohr rohre, US $1,200.00 – Picture 3
Da - Siemens & Halske Post Triode, very rare tube, seltene triode rohr rohre, US $1,200.00 – Picture 4
Da - Siemens & Halske Post Triode, very rare tube, seltene triode rohr rohre, US $1,200.00 – Picture 5

Da - Siemens & Halske Post Triode, Very Rare Tube, Seltene Triode Rohr Rohre

US $1,200.00

  • Gedser, -, Denmark
  • Jan 29th
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Up for auction is 1 (one) Siemens & Halske Da German Post Triode. I have 2 (two) of these for sale. Please see my other auction. They are very early versions, with top exhaust tip and red socket bandarole, as you can see on the pictures. Both tubes test very strong and I have tested them in a real audio circuit and they perform perfectly and completely stable. Never been put into service - they were discovered stored away in a University Lab. Serial number 543, see pictures. Test values: Va-k Vk-g Tube in other auction Tube in this auction Ia data sheet curves 170V -25V 35.3mA 35.7mA ~27mA 190V -30V 39.6mA 40.5mA ~30mA 220V -35V 46.6mA 47.6mA ~37mA Consistent readings above spec, indicating strong emission. The tubes were also tested for mutual conductance on a TV3 tester. Unfortunately this tester does not provide settings for the Da tube type, so I had to use improvised settings and test at low current. With only 20mA anode current, the gm measured: 2.0mA/V (The tube in my other auction measured 1.9mA/V) These are VERY strong readings - the data sheet says 2.5mA/V with 50mA anode current. What you see on the pictures is what you are going to get - sold AS IS. I will ship worldwide. The tube will be packed extremely well. I have a foam lined box with cutouts in the foam that fit snugly around the tube. This box will be reinforced with wood panels and then put in a larger box with adequate stuffing - so this gem will travel safely! Worldwide shipping: 30Ђ (I will ship both tubes together for this price if you buy both) I repeat: I have 2 (two) of these for sale. Please see my other auction as well.
Condition Used :
An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections.
Seller Notes “Tests as new and has not been put into service, but due to the age I can only sell as used.”

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