amperex 6922 pq white label tubes

Very nice 6922’s; I like their sonic signature very much. As always, a lot depends on the piece that they will be used in and your tastes. The ones I have I like because in my gear they are quiet with very stable imaging; and, most important for me, rich sounding with good bass, extended enough up top and with natural tonal colors (not thin and bleached out). I looked at both ads. The ones on the Asylum are NOS and claimed to be tightly matched (important); the printing on the glass is pristine and the boxes look new. Lastly, I always like when seller offers local pickup even if I can’t. I would feel confident that these are, in fact, new. The ones on eBay are not NOS although claimed to test as new. The printing on the glass makes it obvious that they have handled quite a bit. Although claimed to test within the "new" parameters, one of the sections in one of the tubes tests below the "new" spec. Those tubes have seen some use. IMO, although a little pricy (not much as today’s prices go) the asylum tubes are a much better buy. Having said all that, take a look at this; great and reliable vendor who will offer good advise (no affiliation). The 7308 is also a great tube and there will be no issues dealing with this guy. Good luck!

https://www.upscaleaudio.com/products/amperex-7308-vintage-gold-pin

Btw, one pair has O getters the other D getters; not the exact same tube.  I have only used O getter PQ's.  I am sure there are opinions out there about this.

There are many variations of 6922/7308/6dj8/CCa/etc - even with white lettering and coming from Amperex. Cost is determined not only by matching and measurements, but also by wear, when they were made, etc. There are codes to indicate year and date - closely matched tubes should also be matched as to manufacturing dates, for example. I have several pairs of Amperex USA-made white label 6922 and have typically paid about 200usd per matched pair. The Ebay listed pair has seen significant wear despite the measurements. Like frogman, I have used PQ (premium quality) labeled O-getters; the sound is glorious. The AudioAsylum pair seem to be a better deal.

If you really want to get confused:

http://www.audioasylum.com/scripts/d.pl?audio/faq/joes-tubes.html#6DJ8

Then there’s the E188CC, E88CC, ECC88, CCa.
All the companies and countries where each were made,
plus all the changes to each over the years etc.

I would hold off on buying expensive tubes until you familiarize yourself with the variables, OR get advice from someone who knows the subject.
Save yourself from expensive mistakes and/or getting ripped-off.