The objective holder fits into a dovetail slot in the back of the front plate.
The objective slides hold three objectives, only one remains.
Dovetail objective slot. Here the sample holder has been removed.
The mirror fits into a mount at the end of an extension at the back of the microscope. The joint has loosened, causing the mirror to fall.
The mirror has only one reflective surface. The glass is missing in this instrument. The back of the mirror is a turned and decorated surface.