Leitz Wetzlar SM-Pol - polarizing microscope.
Brochure: https://www.microscopemuseum.eu/catalogues/Ernst_Leitz_1966_SM_POL_polarising_microscope.pdf
German forum: https://www.mikroskopie-forum.de/index.php?topic=17309.0
Microscope model Leitz SM-Pol - main photo
Microscope Index: 335
Microscope model Leitz SM-Pol
(Microscope model: SM-Pol)