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(1) Tested Green Marbled Bakelite Speed 227 Tube Type 27 Tube Brass Pins Globe

(1) Tested Green Marbled Bakelite Speed 227 Tube Type 27 Tube Brass Pins Globe

Tested and Guaranteed

$84.95 USD
$84.95 USD
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(1) Tested Very Strong Rare Speed 227 (type 27) Globe Tube with a Green Marbled Base.

Dark olive green marbled bakelite base.
The original label is still present and with very little wear.
Screen mesh wrap with a cup getter.
Bare bullseye bottom which indicates that this is an early version instead of the typical licensing statement seen on later tubes.

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

Gm Test = 1225 micromhos
Minimum pass/good = 630
Average NOS rating = 960

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