Wow, that's a very dirty Amiga 2500.

Decades of dust and insects' body fluids (and probably some bodies, too) have settled on this Amiga 2500 case. If you want clean such a thing, make sure to not apply much rubbing and cleaning fluid to the label. It's basically paper with only a very thin layer of color coating, that comes off quite easily.

A very dirty Amiga 2500 case. Under the dirt, the case color is mostly original.