Thanks for the feedback crew, appreciate it.

Dismantled the 512k today. Found some calcium marks from moisture along the base of the case, but thanks to Apple's design team thinking ahead... no damage done thanks to the metal base plate protecting the electronics. Wiped it off, and that was that. Saw all the signatures on the inside... beautiful. The electronics look in pretty decent shape as well, which is great, although the capacitors on the analog board still need replacement.