I have a small collection of vacuum tubes. Most are new, a few are used. Also a great old book from Miniwatt about 200 pages.
Electronics handbook I. The book covers all of the technical details & curves for the tubes I have, & has 22 pages on "Instructions on the applications of electron valves". It's awesome!
These were purchased & collected to do a rebuild on an old amplifier. But that's not likely to happen, so they need to go to a new project.
8 x 12AX7 / ECC83 Pre amp tubes.
7 x 6BQ5 / EL84 Power tubes.
2 x 5AR4 / GZ34 Rectifiers. (These I think are used)