Monocular compound microscope - 3D CONDENSOR GAMMA HUNGARY, für Zeiss JGO Microscop - 1950-1960 - Gamma
Monocular compound microscope - Wetzlar Monocular Brass & Black Enamel Microscope - Serial № 465464 (c. 1953) - 1960-1970 - 德國 - Leitz