Anyone have any experience with these tubes? I got these as a replacement from bottlehead (stock tubes were making goofy noises) and haven't been able to find much info on them. What I can say, however, is that they sound great! More tubey than the stock tubes, just the right amount for my setup (XDA-2 > Quickie > XPA-200).
It has markings on 3 areas of the tube, the first is the "RT" logo with "3S4" then "6029" beneath it. In another area, it has two green flags crossing each other with "T" in each flag. The last marking is in white (as opposed to the green of the other two markings) and is two flags/clubs (rounded front edges look like golf clubs), intersecting with four letters above that I cannot read. What I believe is the serial number is in black (PA1 L9B and PA1 L9C for the left and right tubes).
Here is an image I found of them.
(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fi.ebayimg.com%2F00%2Fs%2FMTA2NlgxNjAw%2Fz%2F5GgAAMXQLs5RokjA%2F%24%28KGrHqN%2C%21lMFGT%2B8%2BQD%29BRoki%2Byz2w%7E%7E60_57.JPG&hash=373227210b56dc34a6b5c9d8c65a63f1eeab0bac)
