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RCA-branded Mullard Xf2 double halo EL34/6CA7 - NOS (part of matched quad) - Mid 60's production Mullard Xf2 double-halo EL34. It's hard to see both halos, but they are there on all of these tubes. NOS, but the printing is not perfect and the boxes are pretty bad. This tube is part of a matched NOS quad.	RCA-branded Mullard Xf2 double halo EL34/6CA7 - NOS (matched quad) - Vacuum Tube Valley calls these the "Holy Grail of EL 34's" (and they would want more than $400.00 for just TWO of them - IF they had any in stock. They don't.) Tube World has a pair available for $375.00. Of course, they aren't really that well matched. These tubes are VERY closely matched NOS Mullard-manufactured, RCA-branded Xf2 double halo mid 60's production tubes.	RCA-branded Mullard Xf2 double halo EL34/6CA7 - NOS (matched quad boxes) - The tubes are GREAT! Their printing is fair. These boxes... well, now you know why I'm cutting the price - a LOT!	RCA-branded Mullard Xf2 double halo EL34/6CA7 - NOS (matched pair) - This is a matched pair of Mullard-manufactured, RCA-branded, mid-60's production Xf2 double-halo getter NOS/NIB EL 34/6CA 7's. You can barely see the factory codes. (Or at least, faint traces of the codes - they are nearly impossible to photograph.)
RCA-branded Mullard Xf2 double halo EL34/6CA7 - NOS/NIB (matched pair) - This is a matched pair of Mullard-manufactured, RCA-branded, mid-60's production Xf2 double-halo getter NOS/NIB EL 34/6CA 7's. These are absolutely unused, except to test them.	Sylvania NOS/NIB 7199 - Absolutely NOS/NIB 7199's from Sylvania. (Sorry about the poor focus. I'll fix that as soon as possible)	RCA NOS/NIB 7199 - These are RCA 7199's NOS/NIB. (another out of focus shot, sorry. I'll fix it as soon as possible.)	RCA and Sylvania 7199's in their boxes. - Absolutely NOS/NIB RCA and Sylvania 7199's. NOW is the time to buy these at a reasonable price!
Mullard-manufactured, RCA-branded EL34 Xf2 single halo - 2 matched pairs - NOS Mullard-manufactured, RCA-branded Xf2 single halo EL34. Most tube sellers would call this a matched quad. The pair on the right matched my reference tube at exactly 50 mA each when biased in an amplifier. The pair on the left was matched, but delivered 47.8 mA with the same bias Voltage. Close, but no cigar. They are two matched pairs!	Mullard 5AR4 NOS 7-serration plate - date code - This is a "True Mullard" 5AR4 sporting a "B 014" date code. 1970 production. Absolutely NOS and ready to make your favorite amplifier, preamplifier or guitar amp SING!	Mullard 5AR4 NOS 7-serration plate - (Sorry about the blurry picture) This is a NOS "True Mullard" 5AR4 with a B014 date code, indicating 1970 production at the Blackburn, England plant. The box is lousy, the printing is a little rubbed from the box, but electrically, this is one WONDERFUL rectifier. It has NEVER been used (except to test it)!	Electro-Harmonix EL34EH - factory-matched quad - This is a factory-matched quad of current-production Electro-Harmonix EL34EH tubes. These are brand new and have NEVER been used since leaving the factory.
Electro-Harmonix EL34EH - factory-matched quad - This is a factory-matched quad of Electro-Harmonix EL34EH tubes. I find it interesting that one tube is about 1/4" taller than the others! Still, (acording to the factory) these are absolutely PERFECTLY matched.	RCA NOS 12X4 - This is a NOS RCA 12X4 rectifier for a PAS preamplifier.	RCA-branded Mullard 5AR4/GZ34 - NOS - The left tube is date-coded by RCA as "CH" - Indicating it was added to stock in Jan. 69 The right tube is date-coded by RCA as "BM" - Indicating it was added to stock in Apr. 67 Note that the left tube has seven serrations while the right tube has four.	NOS NIB Mullard GZ34 (5AR4) - Perfect Lettering - CAREFULLY unwrapped for this photo. Draw your own conclusions.
NIB NOS Mullard GZ34 (5AR4) - Perfect Lettering - CAREFULLY unwrapped for this picture. Now, back in the box.