Microscope lens - objetives - 1910-1920 - Various

Prestigious lot for collectors of antique microscopy and scientific instruments, consisting of 12 original pieces from historic German and British manufacturers.
Detailed Content:
• 1 Special eyepiece Carl Zeiss Jena "Kompens.-Okular 4":* High-quality compensating eyepiece with lateral micrometric adjustment.
• 1 Beck London oil-immersion objective 1/12: Oil-immersion objective with NA 1.30, preserved in its original case in black-lacquered metal.
• 1 Objective Watson & Sons London "Parachromatic" 1/6 Inch: Precision British optics in original case.
• 9 Brass Canister Protective Cases (Brass Canisters): Includes rare and engraved pieces from top manufacturers such as E. Leitz Wetzlar (various sizes), Carl Zeiss Jena (Apochromat 8mm) and H. Crouch London.
• Important note: These 9 brass cases are intended to complete sets, currently found empty (without the inner lenses).
Condition of Conservation
The optics (Zeiss, Beck, and Watson) are clear, though with some fungi (spider webs), internal dust, and exterior patina consistent with age. The brass of the cases maintains the original shine in several pieces, with some natural oxidation marks that attest to their authenticity.
Total weight of the set: 738 g.