Nice example of the 55mm f3.5 macro from Konica. The inner lenses are free of mold or mildew. There is inner lens coatings on the inner lens surfaces and they can be cleaned off if you can get to them. The level of inner debris is not so much that the lens will perform poorly, it will have a certain amount of soft focus but hardly noticiable in the images.

I have the rear lens cap but not the front. No filter.