If keep in a controlled climate, and no batteries involved...I would check out the cables for cracking. Specially the coil cable since it has been wrapped around the shaft for so long. I have noticed that the newer excaliburs {98 to present} seem to have a problem with this, causes tension on the outer part of the cable if wrapped for long periods of time. I've Not seen alot of the older grey cable ones so I can't say, other then they don't build them like they use to! And this seems to be with Excaliburs only, I would guess because of the saltwater conditions they have been exposed to. Next would be the O-Rings, they since sealed, and lubed, have a better chance of being OK, if the machine was taken care of during use around saltwater, and not exposed to harsh temp changes they should be fine. I would do a visual inspection, pulling the shrink tubing back and should be a nice contact, seal. If you need a picture..I can Post. The one's on the shaft/knobs..you almost have to trust in God on them. I would bet, all is fine if taken care of during use. Not sure how well your battery will hold up after many years of storage, but be ready........