As strange a reason to keep material from performers early years at hand, as many are now no longer with us or quite aged and near end of life. The earliest mediums storing recorded Material is always going to appreciate in Value.
A work colleague in the last week went to see AC/DC Live, he thinks that this is the last chance, to see them with the health to endure a typical time allocated for a concert.
Probably makes sense to experiment with the PAVCR Manual Cleaning Method, to see what can be done for the replay quality.
Also makes sense to exchange the Inner Sleeves for Anti-Static Sleeves or another suitable type of sleeve, but do keep the original inner sleeve for the resale when it occurs, a collector of Vinyl might be purchaser and such things matter.
I have told the story about my 40ish years owned AC/DC Album on the Gon, where today following the PAVCR Manual Cleaning method, I would use this Album on any Vinyl Source of using a Cartridge of any Value. Not bad for a Album put into the must keep, but can't use any more Section on the Storage Shelves.
The Manual Cleaning Method has been to date has been very SUCCESSFUL at reducing Albums stored in the no longer to be replayed section in the Storage Shelving.