There`s a bit of serious speaker kit in there with the lovely paper cones and Alnico magnets. The fact that the paper is still blue will be because the grilles have been on all that time. Playing with grilles off it dulls down to a grey colour eventually .......probably dust and UV. I suspect in time these speakers may go up a bit in value. Little Maxims are fetching between between 2 and 3 hundred now.