via this auction

Basically Carlos Pizarro, one of the best technicians in Spain (maybe the best) had it fully reburbished to like new condition:
-Integral refurbishment, complete calibration, new illuminated Sliders that makes operating the Odyssey another story compared to the original.
-The synth was disassembled and fully rebuilt. All blocks, panels, controls, connectors, power supply, were fully rebuilt.
-Side woods matching the original colour 5mm thick.
-Brightness of the slider caps can be adjusted or even turned off with a potentiometer. Anti-dust felt all over the panel.
-Improved keyboard with a felt system, eliminating mechanical noise.
-Cleaned contacts, callibrated in height. Working flawlessly
-All keys restored and polished.
Summarizing, this is a very rare and unique unit. Quality built has nothing to do with the Korg version btw.