An interesting collection of rare microscopes purchased in Lviv and Kamianets-Podilskyi is on display at the MICROTECH Museum of Industrial Instruments.
There is also a catalog of German microscopes of the early 19th century, which contain images of microscopes from the museum collection.
The general features of the collection of rare 80… 100 annual microscopes are as follows:
Microscope housings are made of brass;
Microscopes have rotating separators with interchangeable lenses;
Microscopes have inscriptions in German;
Structurally rare microscopes do not differ from modern analogues