One tested good Philco 5U4g (Pictured sockets NOT included), used, black ribbed plates bottom rectangle wire getter, the tube appears to have the Westinghouse EIA code 337, but it's difficult to read it clearly. 54 / 54 is the minimum test value for a Rectifier/Diode tube on the Hickok 539 B, tube tested at 105/102. Note: There is no average bogey test value for Rectifier/Diode tubes on the 539 B, or any other tube tester I am aware of, a good strong Rectifier/Diode tube will test well above the minimum value, see pics for actual tube(s) included.

• Any noted test results in the above description are my findings and are intended as a reference only !! No guarantee is made that any tube will test to a specific value in the buyers tube tester, most tubes are tested on multiple tube testers for shorts, leakage, gas, life and noise where possible.
• Tubes stated as NOS are only believed to be NOS, no guarantee can be made that any tube is a "true NOS tube", it's anybody's guess how many times these tubes may have traded hands over their lifetime.
• All "Tested Good" tubes are guaranteed to be good usable tubes. All tubes are documented to prevent fraudulent returns, some tubes may have a Tamper Proof sticker, removing this sticker will void all guarantees and the tube will not be refunded.
• Box conditions, if included, vary widely from very poor to excellent, no guarantee is made as to the condition of any tube box.

Please read important information below !!

If it's not pictured in this listing or stated in the description above it is not included, whatever "IT" may be, pictures are provided showing the exact item you are purchasing, ask questions if there are any doubts about anything.

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TRACKING INFO is provided through eBay when the item has shipped.

All items are sold with out warranty unless stated otherwise in the above description, items stated as "Sold AS-IS" in the above description are not returnable for any reason, factory sealed items that have been opened by the buyer are not returnable for any reason.

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