Rare NOS Mullard 12AX7 ECC83 Tube Sq-Get mC1/B5L B339 12AX7A E83cc PERFECT L@@K!

Description: Up for grabs is an outstanding and ultra rare NOS Mullard 12AX7 ECC83 tube. Holy grail of early mC1 Mullard tubes. NOS/NIB with original box and paper wrapping untouched and unused. Outstanding strong tube with high NOS testing and Platinum BALANCED triodes. Simply as good as it gets with this PERFECT tube. This is one of the most desirable of the mC1 tubes produced in 1955 with the mottled wavy glass. 17mm Long Plate tube with the highly sought after square getter. This is a stunning sounding tube. This would make for an excellent V1 tube choice. One of the finest and rarest Mullard tubes you will ever find to buy! 2x tested. Produced in the legendary Mullard Blackburn factory England. Tube is in pristine condition with excellent intact label as shown. Tube codes are mC1/B5L Fully tested for Gm Ip shorts and gas. High quality testing you can depend on. Tube will ship in the new Mullard box as pictured. Don’t miss this one!! PLEASE SEE MY OTHER LISTINGS FOR MORE GREAT RARE TUBES!! Tubes undergo dual testing procedures whenever possible. Analog tested on fully calibrated and modernized Hickok 539c, AVO 163 or Triplett 3444-A testers. Then digitally tested and displayed on the Divo/Orange tester for its ease of interpretation by buyers. As a result, you are assured to be getting some of the finest quality, fully tested and proven vintage tubes available for sale. ******************************************************************** Triplett 3444-A results: Triode 1 = 1660 gm / 1.4 mA Triode 2 =1710 gm / 1.4 mA Triplett 3444-A minimum = 1000 Gm Triplett 3444-A Avg. Nominal NOS = 1600 Gm / 1.2 mA *********************************************** Tubes have passed all the following tests: Heater filament test: Short circuit Heater filament test: Open circuit Heater filament test: Tolerance check Heater cathode insulation: Leakage Heater cathode insulation: Short Circuit Tests for heater current abnormalities Amplification factor Voltage gain Power gain Screen grid test Mutual conductance test Dual test for double triodes Emission Inter electrode leakage Inter electrode short circuit Flash-over (arc detection, high voltage breakdown) Gas ionisation test *** SALE TERMS - PLEASE READ COMPLETELY *** All my tubes are listed under the “parts OR not working” category because tubes are in fact parts for amps but the main reason being its the only way ebay honors a true no return listing. This is the only way to prevent a very small number of buyers from buying tubes in order to be able to audition their sound in their equipment and then unfairly abuse the ebay buyer protections to be able to force a return weeks later. Obviously that is not a situation sellers can endure particularly when dealing with NOS tubes at times. Your understanding for why that has to be done is appreciated. Please ask any questions or concerns and I will respond promptly. USA SHIPPING ONLY. Please check my other auctions for other rare and hard to find tubes that are also available. All items will be very well packed and shipped the next day whenever possible. Although I DO NOT ACCEPT RETURNS because of the sensitive nature and personal tastes associated with vacuum tubes, I will certainly work with any buyer to address any problem that may occur such as a tube that arrives damaged in shipping etc. I require any buyer that encounters a problem to notify me within 72 HOURS after receipt of a pending issue. If as a buyer, you feel you can not adhere to the sales terms of my listings, I kindly and respectfully ask that you do not purchase tubes from me. Unless specifically stated in the listing and commonplace amongst the majority of tube sellers, I do not warranty or make any guarantees related to noise, hum or microphonics. All tubes are sold in AS-IS condition as shown and demonstrated in the listings. As is widely understood, tube testing results do not translate between different brands of testers and the different approach each manufacturer used to achieve their test results. As a result all tubes listed for sale are represented and sold strictly off the results shown and provided by the testers used in the listings. All the testers used are some of the most respected models ever produced and are professionally calibrated yearly by the best techs in the business. Calibrations are checked regularly using bogie tube sets dedicated for each tester. All of which ensure solid and accurate results for the tubes tested and confidence for the buyer in the vintage tubes being purchased. Therefore please let it be understood that I will not guarantee or compare the results off any other testers nor will partial refunds be granted based off unknown testers and their obviously unknown condition and accuracy. As a courtesy, every tube I sell is cleaned and treated with Deoxit to remove 50+ years of corrosion and grime. For Best Results DEOXIT Your Sockets!! ***IMPORTANT NOTICE TO OVERSEAS BUYERS MUST READ!!!*** Please Be Aware….All my listings are sold strictly for shipping only in the USA. If you are an overseas buyer that registered the ebay global shipping program depot or other 3rd party shippers address as your formal address registered with ebay to be able to circumvent the USA only shipping policy, be aware that as the seller I WILL NOT be held responsible for any items rerouted overseas. You do so at your own choosing and OWN RISK!! I can only guarantee the packages safe arrival at the USA address listed on your ebay account. I WILL NOT BE RESPONSIBLE for any lost or damaged packages outside of the continental USA borders. FEEDBACK: I will leave excellent feedback for the buyer once I receive their feedback indicating they have received their item in good condition and are satisfied with the transaction and their buying experience.

Price: 360 USD

Location: Willow Grove, Pennsylvania

End Time: 2024-11-25T15:16:08.000Z

Shipping Cost: 7 USD