The last photo of Vintage Carl Zeiss Jena microscope eyepiece with engraved logo. I don't know the magnification. - Mikroskopteil

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Vintage Carl Zeiss Jena microscope eyepiece with engraved logo. I don't know the magnification.

(Carl Zeiss Jena vintage microscope eyepiece with engraved logo. I don't know what magnification.)

Vintage Carl Zeiss Jena microscope eyepiece with engraved logo. I don't know the magnification. - different 3 view
Photo 3 – Vintage Carl Zeiss Jena microscope eyepiece with engraved logo. I don't know the magnification.