RCA Cunningham 5Z3 Rectifier Tubes, Matched Pair, Tested, Foil Getters

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RCA Cunningham 5Z3 Rectifier Tubes, Matched Pair, Tested, Foil Getters
You are bidding on matched pair of RCA Cunningham 5Z3 Rectifier Tubes.
These tubes have hanging filaments, smooth black plates and foil getters. They were made in the late 1930's.
They were tested on my calibrated TV-7/B. They have been tested for shorts and gas. The tubes test with readings of 46/50 and 52/48. Minimum is 40.
All tubes are tested on my calibrated TV-7/B or on my calibrated Hickok 539C. All of these tubes have been tested for transconductance, shorts, gas, leakage and life. All tubes meet or exceed manufacturer published specifications of transconductance (Gm) for the specified tube type. All tests are tested twice - prior to the listing and prior to shipping.
I have been selling tubes on the internet since 1998 and have been working with tubes since the early 1960's.
If you have not already done so, please take a moment and
look at my feedback.
All tubes are 100% guaranteed good on arrival.
These are great tubes for your new audio gear, guitar amps and vintage stereo/audio gear.
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"I will ship overseas"
Regarding Shipping
Your tubes will be well packed.
All tubes are shipped in white boxes or the original boxes if available. They are than are wrapped in bubble wrap and shipped in a box. I have shipped thousands of tubes all over the world and have not yet had any arrive damaged.
Payment must be received with 2 days of the auction close. Foreign bidders are welcome to bid.
I will gladly combine auctions to save on shipping when possible.
I have sold and shipped electronic equipment and tubes to over 72 countries.
I pack items very well.
See my feedback and bid with confidence!