Beautiful pair of Mullard 12AX7 long plate square getter mC1 tubes, with identical shield logos. Perfectly matched and balanced for Gm on the Amplitrex AT1000. 1957 Blackburn, UK, date codes. Date codes mC1 B7B & mC1 B7F.
Item Tag: Mullard
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MATCHED PAIR MULLARD 6CA7 EL34 TUBES xf2 B8F3 TV/7 and Amplitrex Tested 100%
Etched Code is xF2 B8F3 = 1968 Blackburn Factory. Mullard EL34 6CA7 Tubes. Amplitrex AT1000 Tested. The minimum for a EL34 is 30. Years ago, I put away a bunch of great Tubes. Matched Pair. There are tens of thousands of tubes there.
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NOS Amperex Mullard BUGLE-BOY 12AT6 / HBC90 tubes – United Kingdom
SquareTrade © AP Visit this seller’s eBay Store! TubeMuseum How many times have you purchased what you read advertised as balanced and tubes on eBay and have received mismatched or marginal tubes? Well, get rid of those! Here are MUSEUM QUALITY tubes that will end your search for the Museum Reference Quality you would expect from a Premium tube in your ultimate tuner or system. PRICE IS FOR 1 TUBE = BID 5 for 5 TUBES! NOS NEW OLD STOCK MUSEUM QUALITY AMPEREX 12AT6 = 12DT1 = HBC90for FM TUNERS RADIOS Superheterodyne AMPLITREX CERTIFIEDVERY GOOD TUBES FROM 1965 OLD-WORLD ENGLANDULTRA-LOW-NOISE SPECIMEN Please PayPal Welcome! Terms of Auction We back our auctions with a 100% satisfaction guarantee. Please SEE my other ebay Auctions : Visit this seller’s eBay Store! TubeMuseum View seller’s other items PRICE IS EACH, BID 5 FOR 5 TUBES!
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Very Rare BRIMAR Made 1960 NIB / NOS MULLARD ECC82 / 12AU7
Very Rare BRIMAR Made 1960 NIB / NOS MULLARD ECC82 / 12AU7. The BRIMAR codes on the reverse 1C0/1571, shows it was made at the Brimar Plant in the first week of March, 1960. The 1571 is the Brimar code for 12AU7.
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Excellent Mullard f32 Blackburn GZ34 Tube TV7-D/U Tested As NOS Codes B6F1 B6C3
See photos for TV7 test results where a reading of 40 = 65%, these tested 61/60, 61/62. Those readings are pretty much full blown NOS. Price is for (1) tube. First buyer has choice of tubes. If both tubes are purchased you will receive a 10% discount off your total purchase.
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Single Mullard (GE lbl) 5AR4 GZ34 NOS NIB f32 Vacuum Tube
Single NOS Mullard 5AR4/GZ34 tube, labeled for GE, with original box. Blackburn f32 production, 7-notch plates. perfectly balanced between sections. Date codes f32 B?C1. Actual manufacturer Mullard.
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1, NEW, Mullard 5AR4 GZ34, fat base, dual getter, f31, Great Britain, 1958
One, new in box, Mullard 5AR4/GZ34, Grey plates, f31 construction, no notches in plates, dual D-getter, fat base, white printed Mullard logo. “Made in Gt. Firm base, excellent silvering. Tube tests at 170-170 where pass/fail is 80.