Here is a Leitz microscope which has seen considerable use. I'm no expert but as far as I can tell it is working properly, though it needs some TLC.
Three objective lenses are fitted (although the carousel has spaces for five) see photos. The light works, the sliders all move freely, the eyepieces are clean but it comes with no accessories, slides etc.
The paint is well-worn in places but this is purely a cosmetic defect.