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	RCA, GE and Sylvania 56 Tubes - Test NOS
This is for a single 56 audio tube. Brands available are RCA, GE and Sylvania. The National Union tubes have all been sold. Please specify what brand you would like when you purchase. They all have black plates and foil getters and were made in the 1930's and 1940's. These were tested on my calibrated TV-7B. They have been tested for shorts, gas, and transconductance. The tubes test very strong with readings of 68 and above. Minimum is 37. 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.* Please e-mail me if you have any questions or you may call me at 602-803-6290. These are great tubes for your new audio gear, guitar amps and vintage stereo/audio gear. Thanks for viewing my auction. Please check out my other auctions for more audio tubes, ham radio and radio related items, and collectibles for great deals. You can add me to your list of favorite sellers by clicking here. "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.

RCA, GE and Sylvania 56 Tubes - Test NOS

This is for a single 56 audio tube.

Brands available are RCA, GE and Sylvania. The National Union tubes have all been sold.

Please specify what brand you would like when you purchase.

They all have black plates and foil getters and were made in the 1930's and 1940's.

These were tested on my calibrated TV-7B. They have been tested for shorts, gas, and transconductance. The tubes test very strong with readings of 68 and above. Minimum is 37.

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.

Please e-mail me if you have any questions or you may call me at 602-803-6290.

These are great tubes for your new audio gear, guitar amps and vintage stereo/audio gear.

Thanks for viewing my auction. Please check out my other auctions for more audio tubes, ham radio and radio related items, and collectibles for great deals.

You can add me to your list of favorite sellers by clicking here.

"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 70 countries.

I pack items very well.

See my feedback and bid with confidence!

You may call me (Dave) anytime at (602) 803-6290