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45 National Union Triode St Shape Vintage Electronic Vacuum Tube Tests Strong




Item History & Price

Information:
Reference Number: Avaluer:7493522Model: 45
Brand: NationalType: Vacuum Tube
Original Description:
For your consideration is a vintage National Union 45 St Triode
These tubes were tested on a Hickok 539C where the minimum reading is 1170gm and the reading for a new tube is 1800gm or better
This tube tested very strong with a reading of 2400gm 



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