About 1/2 - 2/3rds gone, turnable IF you can find a good lathe operator.
H-bobbins look ok from what I can see, but inspect the clips thoroughly if you use them again, they tend to start cracking after lots of miles and/or hard use.
Ok to use if you do get them turned AND are only driving in a "sane" fashion. Road course would want new with full mass.
Before worrying about or chasing any squeaking, do a fresh bedding and then evaluate, as always, be extra diligent about safety when bedding.
I'm still not able to supply any hardware, sorry, it's a painful story.