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(1) Tested Arcturus Type 57 Tube Shouldered Blue Arcturus Pentode Detector (c)

(1) Tested Arcturus Type 57 Tube Shouldered Blue Arcturus Pentode Detector (c)

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$34.95 USD
$34.95 USD
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(1) Tested Arcturus Type 57 Tube.

Shouldered envelope.
This tubes tests as NOS.

Tested on a calibrated Hickok TV-10 military tube tester and exhibiting no shorts or leaks with the following results:

Test Result = 1400 micromhos
Minimum pass/good = 770
NOS Target Value = 1155

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