I don't usually post these games but what the hell! I have a couple of mystery tubes that I harvested from a thrift-store-find tube 2-track by webcor. Already got a pair of Mullard EL-84s, two Mullard 12AX7s, and two Mullard 12AU7s out of it, so totally worth the 20 bucks I paid! But I went digging around in there tonight and grabbed the last 2 tubes out... these Webcor branded tubes that say "made in USA" and are obviously not Mullard. All other tubes in here were mullard and all are branded Webcor so appear stock... this seems odd to me why they would choose a different, USA brand for this pair of tubes. They have the "A" suffix so maybe that has something to do with it. At any rate, WHAT ARE THEY? I think I took some good pix. Haven't tried them in anything, not too curious really, just idly curious. Have a look!