Ack!!! I would leave it alone. The paint job is part of its history, now. I don't think it looks that bad... how do you know the original owner didn't do it? or his kids? (That would be special.) Anyway, if you want to tinker with it, first try soap and water. Might get lucky. Maybe the paint is water-based. ps my favorite EK2 is an old beat up job with plenty of character just like yours. Before you sandblast it, let me know and I'll trade you one of my "mintier" ones for it!