I've been sick this afternoon so I decided today would be the perfect time to put together a tube picture guide that some of us discussed in another thread. Here are the pictures I've got so far, I think I have a couple more but this is pretty much all I've got. For the sake of organization I'd really like it if we could keep this free of any banter and just have pictures. If anyone else has anything to add, feel free to do so.
Edit: I came across a tube factory code list, it's pretty useful to help find out where the tube was made. The two bottom pictures are examples of the factory code, note the delta on each tube indicating they were made at the Heerlen Holland plant. Not sure if anyone was interested but I thought I'd pass it along just incase.