Clickity Alternator, Issue?
 

So with my engine disassembled I notice that my fan and alternator are making a nice little clickity noise. Is this considered normal considering the bearing arrangement? There's no other bearing noise like a whine or groan while running, but I don't like noise coming from rotating parts.

https://www.youtube.com/watch?v=sWLXin5E8pE

Not sure, but it sounds like brushes rubbing on commutator ring, so that could be a normal noise.
Are brushes new?

So far as I know it's original, so who can say?

Find a local rebuilder. Have them replace the bearings with quality bearings not Chinese bearings. They will rebuild the entire unit, and be ready for another 30 years.