When I get back to the USA to receive my TT, I will have the Telefunken and EH 6H30s with me.
I also talked to Andy, Brent and Jesse and since I have the Telefunken the common tubes they recommended are:
Mazda France SILVERPLATE TRIPLE MICA.
12AX7 Mullard LONGPLATE, Square getter, 1950s.
12AX7 Amperex Bugleboy type, long narrow plates, foil-strip D-getter, 1950s codes.
12AX7A / CV4035 / F6057 RARE Brimar box plate military type.
I have a few amps/preamps I could use these so it will be fun.
As for the DR, I am in touch with a French dealer and he has some so I will probably get one pair and see if I like them, he will put on hold another for 30 days so I can a pair for replacement.
If you have a specific 12AX7 you love, I would love to hear.