You are bidding on a Western Electric type 311B radio/audio tube. On my Amplitrex AT-1000 tester it tests strong, at 90% of the specifications for emission, Em, and 91% of the specifications for mutual conductance, Gm. The date code is 6459. I believe this was a new tube that developed some gas during storage. When I tested it, the gas consumed much of the original silver gettering, but left it as a good strong usable tube. Shipping weight is 8 ounces. No shipping to China. Please see my other auctions for more interesting radio and audio items, and tubes.

Up for auction is this quad set of very rare 1950s or early 1960s STC 4311B valves made in Sydney under licence to Western Electric. These are vintage pulls from high end broadcast equipment from the 1950-60ss.  I was able to have a few of these tested by a previous buyer and the tested valves all rated as good or higher on an AVO mk4 though these particular valves weren't tested.  I am selling these untested and without guarantee, these are not NOS. These present very well in very clean condition and very close factory numbers.  A good opportunity to pick these up for a very good price! I have a long and excellent history on ebay, I pack well, and am happy to do international shipping with insurance. Domestic shipping includes insurance as part of handling fee. Please do not bid if you do not intend to buy, I do not refund for change of mind.

Up for auction is this quad set of very rare 1950s or early 1960s STC 4311B valves made in Sydney under licence to Western Electric. These are vintage pulls from high end broadcast equipment from the 1950-60ss.  I was able to have a few of these tested by a previous buyer and the tested valves all rated as good or higher on an AVO mk4 though these particular valves weren't tested.  I am selling these untested and without guarantee, these are not NOS. These present very well in very clean condition and very close factory numbers.  A good opportunity to pick these up for a very good price! I have a long and excellent history on ebay, I pack well, and am happy to do international shipping with insurance. Domestic shipping includes insurance as part of handling fee. Please do not bid if you do not intend to buy, I do not refund for change of mind.

Auction for only 2 western electric 311B tube tested 50 50 /30 30=60% new.please take a look for all good pictures. I do this for living.I know How to packed.Maybe you will pay little Bid more .But I m sure you will be more than happy to pay.You know why. Because u will receive your item in one piece. Shipping International US 45.00 has to declare costume at your country.