This should be great! The condition of the planes has to be pretty decent (relatively speaking)if they are in closed crates, and would be even better if some of the parts had grease or cosmoline smeared on them to prevent corrosion...This is wild!
Even if there is rust or the engines are seized. All of them are able to be restored with new rubber seals, gaskets and polishing. This is like finding Tut’s tomb....simply give anything to be there when they excavate these beauties!