The last photo of Carl Zeiss Jena Amplival, Ergaval, Docuval microscope light collector lens, filter holder, model 1 - Mikroskopteil
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Carl Zeiss Jena Amplival, Ergaval, Docuval microscope light collector lens, filter holder, model 1
(Carl Zeiss Jena Amplival, Ergaval, Docuval microscope light collector lens, filter holder model 1)