Up here, if it looks like the finish might be gone, it probably is. Lots of shellac coated older machines were left out in old barns or sheds for years. I've got a 201-2 from Cut Bank, Montana that is going to need total refinishing because the shellac is just crumbling off. The decals are still in good shape though. I'm a little afraid to surface clean it much yet. And it is stuck solid, so I'm not going to bother refinishing until it actually moves.