Special fadeds didn't start production until 2002, the large majority of classic white finished SGs have had ebony boards. The TRC could have come from a different model as those are easily interchangeable. My Classic White hasn't had enough time to age so I can't speak from personal experience but I think the yellowing of the finish is just age. The control panel probably isn't completely airtight, if you look under the pickguard it may be whiter.