The optics supplied with this microscope consist of oculars numbered 1-3, a three-part divisible objective with parts numbered 1-3, and separate objectives numbered 4 and 6. The removable substage slider would have had a holder for two aperture stops, which are no longer present.

The above illustration from Das Mikroskop by Leopold Dippel, 1882

In the Schmidt & Haensch Price List of 1865, the closest model corresponding to the example presented herein is listed as the No 4 model; this is the model shown on the right in the above illustration. The example in this collection is identical except for the addition of the rack and pinion coarse focusing of the tube. Note that the upper section of the microscope can rotate in the optical axis relative to the lower section.