Jackson never made a JEM. Neither did Fender, Takamine, Martin, ESP or Gibson (they made a GEM)
Only two companies were licensed to use the JEM name. First Joe Despagni's JEM Guitars out of LI, NY (see photo gallery) and now only exclusively Ibanez
So this is not a "JEM" so lets drop that name.
This clearly looks like a tribute to the Jackson Eyeball guitar given to Steve. It's clearly not an exact copy or clone.
If you're trying to validate the guitar as to sell/auction you're out of luck without documentation, because anyone with a red soloist can make such an axe. Not cool, but nonetheless very doable.
It would have to have been made before 1986 to be for Steve, as we all know he went to Ibanez at that time and released the JEMs in 1987. Dig into the serial number for a date of creation. Only a fool would build this "for steve" in 1988
If this were an Ibanez made guitar, you would probably have a better chance getting more info HERE, since this forum tends to lean toward those guitars, and has closer ties to Ibanez. I suggest you surf around for some Jackson fan-sites which perhaps can lead to more information.
Good luck in your search. I'd wager it is was NOT intended for Steve. This should be obvious based on the features of the axe. Enjoy... glen