Check out Ozmoid's thread on restoring these puppies. They are incredible speakers. I went from Dynaco A-25 to pair of 1965 vintage 2AX's - the ones with the redish larger tweeter and non-foam surrounds. After '70 they updated them quite a bit changing tweeter, crossovers, then woofer. All interpretations are outstanding and very well worth putting the effort into fixing.
Don't pitch the pots till you get a look at them. If the corrosion isn't too bad you can use dremel with wire wheel and get them back to working condition - though they usually will have dead spots it's a way to try them as they were designed then tweak from there.
The later models moved from rock wool to fiberglass stuffing. The rock wool on the older models has high sulfur content and pots will be worse on these. Later model pots are usually very salvageable.
Good luck and enjoy. I think you'll be pleasantly supised at how ood these speakers are. Here's a pic of my babies completly original. Note older models had solid wood surrounding front edge.
