This should be a fun little project and a nice reference to make sure you're getting legit tubes. I've got the following covered:
There are also some key things to look for with different brands (many were mfg'd by a handfull of companys then OEM'd to others):
Telefunken small tubes nearly always have a <> diamond set into the glass between the pins
Mullard EL-34s have a hole in the guide tube and usually an xf# date code etched in the glass
Telefunken (the good ones) EL-34s have double halo getters
Telefunken's ink sluffs off very easily especially when hot
GE etched their info into many older tubes
RCA etched thier info with a {} bracket around it
I have all sorts of stuff around Off the top of my head:
EF-86 (6267)
Telefunken Shiny plate
Amperex BB mesh plate
Hitatchi ribbed plates (these sound like shit)
RCA large mesh plate
EL-34 (6CA7)
Amperex (by mullard) Orange Globe xf2 single halo
GE (by mullard) xf4 double halo
Mullard xf5 (forget the OEM on this one)
Westinghouse (china?)
Ruby EL-34STR
RCA Big Bottle
Sylvania Big Bottle
Raytheon Japan
GZ-34 (5AR4)
A few different Mullard types
Raytheon Japan
RCA big bottle
GE wide base
ECC83 (12ax7)
RCA Black plate
GE long grey plate (not sure where these pups are, may be in boston)
Mullard, multiple OEM labels
TFK both smooth and ribbed, multiple OEM labels
EI current production
ECC82 (12AU7)
TFK (I think no label on this one though, don't remember)
RCA clear top (branded borroughs?)
I have a few others, probably GE and RCAs
7199
RCA Black Plates(multiple OEM labels)
Sylvania Gray Plates(multiple OEM labels)
I have other stuff around if there are any particular types you're looking for, I can include those, I don't think I use anything from the 6922 family, so none listed, the above ones are the common Hi Fi amp/preamp tubes I use.
For reference, my playback:
Sony CDP??? > Eico HF-85 (TFK 12ax7s) > Dynaco ST-70 (Fully rebuilt using SDS Labs driver board, Mullard 5AR4 > RCA CT 12au7 > TFK EF-86 > Amperex EL-34s) > Large Advents (rebuilt X-over using Solen Caps) <-- all vintage, all the time!