RARE STRONG BRIMAR 6057 CV4004 ECC83 12AX7 LONG HALF BOX PLATE YELLOW TRUSTWORTHY T 2E9/3977 CODE FROM MAY 1959 IN NICE CONDITION AND PERFECT WORKING ORDER ??AVO VCM163 TESTED READINGS - Ia 1.5/1.59 gm 1.8/1.8 100% = Ia 1.2 gm 1.6 PLEASE MAKE PAYMENT IMMEDIATELY AS I WILL BE GOING ON HOLIDAY SHORTLY AFTERIF PAYMENT IS NOT RECEIVED IN TIME I WILL NOT BE ABLE TO SHIP UNTIL THE 15TH AUGUST - BY BIDDING ON THIS AUCTION YOU ACCEPT THESE CONDITIONS ? PLEASE SEE MY OTHER AUCTIONS ?

RARE MULLARD M8137 CV4004 6057 ECC83 BOX PLATE , SQUARE GETTER 641 R6K FROM OCTOBER 1956 THE PRINT HAS WORN OFF BUT OTHERWISE IN BEAUTIFUL CONDITION AND FLUL WORKING ORDER ??AVO VCM163 TESTED READINGS TUBE 1 - Ia 1.15/1.3 gm 1.7/1.7 100% = Ia 1.2 gm 1.6 PLEASE MAKE PAYMENT IMMEDIATELY AS I WILL BE GOING ON HOLIDAY SHORTLY AFTERIF PAYMENT IS NOT RECEIVED IN TIME I WILL NOT BE ABLE TO SHIP UNTIL THE 15TH AUGUST - BY BIDDING ON THIS AUCTION YOU ACCEPT THESE CONDITIONS ? PLEASE SEE MY OTHER AUCTIONS ?

RARE STRONG MULLARD M8137 CV4004 ECC83 NOS UNBOXED WITH CODE 641 R3C4 FROM MARCH 1973 IN SUPERB CONDITION AND PERFECT WORKING ORDER - TESTED STRONG ??AVO VCM163 TESTED READINGS TUBE 1 - Ia 1.5/1.5 gm 1.7/1.7 100% = Ia 1.2 gm 1.6 ?

My Ref: (V-1037) Brimar CV4004 ECC83 Valve Tested fine on my PAC912 tester Unboxed Combined postal discount given

I have 4 super rare very strong tv7 tested Mullard box plate M8137 / CV4004 / 12AX7 tubes

this offer is for 1 piece 1 x E83CC (CV4004/5751/12AX7WA) Valvo - Made in W. Germany triple mica - perfect print (Siemens code) code on tube: f9 #1 ØJ tested on Sencore Mighty Mite II - TC114 Tubetester + Funke W18 very good good starts at 1,9 mA - 100% = 2 mA67 - 3,8/3,8 no guarantee for 50/60/70 years old tubes (for the sound/hum etc.) no discuss/warranty about results of other tube-tester (all tester/countries/voltage is different)! There is no warranty or returns based on what any other tube tester reports. SHIPPING: combine up to 30 tubesUSPS for the US (45 USD) express USPS for Canada (43 USD) express TNT/FedexAsia/Australia (55 USD) express EU and Europe (17 USD) DHL nothing changed 7-14 working days

MULLARD VALVE M8137 CV4004 white print made in Great Britain date / factory codes-- looks like 641R1G1

MULLARD Valve M8137 CV4004 boxed new old stock made in Great Britain KB/D date and factory codes are not very clear looks like -- 64.1 R3D2

Brimar Valve CV4004 boxed new old stock made in England T in triangle3G689

Still thinning out my valve collection and offering a new old stock CV4004 /ECC83 military specification tube. Beloved of audiophiles these tubes are rugged and superb pre-amp performers. This example tests excellent with GM of 1.5@3m/Va Happy to post worldwide via the Ebay Global Shipping Programme or direct international mail. Will be well packaged for shipping. Please see my 100% positive feedback and bid with confidence. Thanks for looking.

RARE LOT OF 4 MULLARD CV4004 ELECTRON TUBES PLEASE SEE PHOTOS FOR DETAILS We don’t know much about these so if you have questions please ask before making offers Out of a Vintage High end Audio collection we will be listing many different stereo and amplifier tubes, these have been in climate controlled storage for many years. ALL ARE UNTESTED Units/ tubes are untested and sold in As-Is condition, Buyers are responsible for reviewing the entire listing description prior to committing to purchase, Images and videos (if provided) are of the actual item for sale and is to be considered as part of the description so please review them carefully, if you would like additional images please request prior to bidding, Majority of the items offered for sale are vintage and pre-owned unless otherwise stated, in which will exhibit typical signs of wear and or normal use. Any defects will be notated in the description but please keep in mind I’m am not an expert, I always try my best to list any defect I see but I may miss things from time to time so please feel free to ask questions and I’ll respond to the best of my ability… These items were purchased in a huge lot of vintage Radio and testing equipment, please see other listings as well… OUR LOT #99

RARE STRONG MATCHED PAIR OF MULLARD M8137 CV4004 ECC83 PRINT WORN BUT CODES VISIBLE DATED TO 1965 AND 1967 IN GOOD CONDITION AND PERFECT WORKING ORDER - TESTED STRONG ??AVO VCM163 TESTED READINGS TUBE 1 - Ia 1.4/1.3 gm 1.6/1.7 TUBE 2 - Ia 1.9/1.7 gm 1.8/1.7 100% = Ia 1.2 gm 1.6 ? PLEASE SEE MY OTHER AUCTIONS ?

BRIMAR Valve CV4004 made in England white print T in triangle round halo

Lot of 4 NOS BRIMAR CV4004 KB/AD ( ECC83 12AX7 ) Double Triode Military Tubes.Half Box Plates.Tested and Measured With Professional Tube Tester L3-3Test Condition:Uf = 12,6VUa = 250VUg1 = - 2VResults:Tube 1: Ia1 = 1,20mA S = 1,60mA/V Ia2 = 1,50mA S = 1,80mA/VTube 2: Ia1 = 1,30mA S = 1,70mA/V Ia2 = 1,35mA S = 1,70mA/VTube 3: Ia1 = 1,50mA S = 1,60mA/V Ia2 = 1,35mA S = 1,60mA/VTube 4: Ia1 = 1,70mA S = 2,00mA/V Ia2 = 1,80mA S = 2,10mA/V Where 100% is Ia = 1,20mA S = 1,6mA/V Item will be sent by registered PRIORITY mail. Your purchase should arrive in 4-10 business days to EU countries, 10-31 business days to rest of the world.Im not responsible for customs duties and customs delays, if the goods will be shipped outside the EU.

CV4004 Valve - Brimar I Assume P&P to mainland UK is included in the price. You are always welcome to come and collect in person.

CV4004 Valve - Brimar? Ive Been Informed The printing on this valve is a bit rough on the second 0 of the CV4004 P&P to mainland UK is included in the price. You are always welcome to come and collect in person.

Mullard M8137 CV4004 KB/D. Condition of this item looks good. I am unable to test, so it’s sold as seen. For exact international postage rates, please contact me.

WELCOME TO YET ANOTHER GREAT DR-TRON AUCTION. THIS SALE IS FOR A VINTAGE VALVE TUBE..... Mullard M8137, CV4004, ECC83 / 12AX7CV4004 KB/D. WHITE PRINT.HALO GETTER. Box Anode plates. MADE IN Great Britain. Code = 641-R8G4.TESTS 100%..A1 = 1.90mA. A2 = 1.75mA..... 100% = 1.2mA.FROM WORKING EQUIPMENT. Please note...... ALL MY TUBES ARE TESTED ON MY CALIBRATED ...... AVO VCM-163 TUBE TESTER .... BEAR IN MIND ALL TUBE TESTERS GIVE SLIGHTLY DIFFERENT READINGS..... MY READINGS ARE ACCURATE AND HONEST. I WILL SHIP THIS ITEM WORLDWIDE. PLEASE LOOK AT MY OTHER VINTAGE PARTS AUCTIONS. THANK YOU FOR TAKING TIME TO VIEW MY ITEM, AND GOOD LUCK !!!

2x Mullard ECC83 Valves Date Code: I61 B2H2, I61 B2H2 Tested by AVO VCM Tester Valve 1 Ia1 = 0.85(mA), gm1 = 1.3(mA/V) Ia2 = 1.05(mA), gm2 = 1.4(mA/V) Valve 2 Ia1 = 1.02(mA), gm1 = 1.45(mA/V) Ia2 = 0.8(mA), gm2 = 1.3(mA/V) NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V) *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20230522L017

2x Mullard 12AX7S/CV4004 Valves This pair of 12AX7S/CV4004 are with very unique box-anode construction. They are believed manufactured by Mullard Mitcham factory Tested by AVO VCM Tester Valve 1 Ia1 = 0.7(mA), gm1 = 1.25(mA/V) Ia2 = 0.8(mA), gm2 = 1.3(mA/V) Valve 2 Ia1 = 0.78(mA), gm1 = 1.3(mA/V) Ia2 = 0.8(mA), gm2 = 1.35(mA/V) NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V) *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20230522L004

2x Mullard ECC83 Valves Very rare pair of Mullard ECC83 manufactured in 1955 with long-plate and []-getter Date Code: mC1 B5F, mC1 B5F Tested by AVO VCM Tester Valve 1 Ia1 = 1.32(mA), gm1 = 1.55(mA/V) Ia2 = 1.45(mA), gm2 = 1.4(mA/V) Valve 2 Ia1 = 1.23(mA), gm1 = 1.5(mA/V) Ia2 = 1.48(mA), gm2 = 1.45(mA/V) NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V) *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20230522L001

2x Siemens ECC83 Valves Date Code: ?W mCP, *** ** Branded Mazda and Mullard but manufactured by Siemens Halske. Tested by AVO VCM Tester Valve 1 Ia1 = 0.95(mA), gm1 = 1.35(mA/V) Ia2 = 1(mA), gm2 = 1.4(mA/V) Valve 2 Ia1 = 0.95(mA), gm1 = 1.35(mA/V) Ia2 = 1.03(mA), gm2 = 1.4(mA/V) NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V) *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20220412L023

3x MONITOR 12AX7/ECC83 Valves Made in Holland Tested by AVO VCM Tester Valve 1 Ia1 = 0.9(mA), gm1 = 1.4(mA/V) Ia2 = 0.95(mA), gm2 = 1.45(mA/V) Valve 2 Ia1 = 0.98(mA), gm1 = 1.55(mA/V) Ia2 = 0.93(mA), gm2 = 1.5(mA/V) Valve 3 Ia1 = 1.2(mA), gm1 = 1.5(mA/V) Ia2 = 1.38(mA), gm2 = 1.6(mA/V) NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V) *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20220412L005

1x VALVO ECC83 Valve Date Code: mCP DX Very rare ECC83 munfactured by VALVO (Germany) with long plate and inclined D-getter Tested by AVO Mark VCM tester Ia1 = 1.3(mA), gm1 = 1.6(mA/V) Ia2 = 1.35(mA), gm2 = 1.65(mA/V) NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V) *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20210507L030