9825, 9845 tapes and manuals

[artag]

I will definitely preserve it, then.

However, is it so rare nobody's put a copy in an archive, or is it just interesting as original media ?

Has anyone got sufficient low level experience of the 9825A tape drives to perhaps recover it even if it doesn't easily read ? Or if it's hard to copy, as Katie has described of some other maintenance utility ?
And probably need to rebuild the cartridge first to avoid stripping all the oxide off the tape.