Carl Zeiss Jena – Vintage Laboratory Microscope – Model FZE (c.1929) – Serial Nr. 237902 – with Original Wooden Case and Accessories Exceptional laboratory microscope manufactured by Carl Zeiss Jena (Germany) around 1929, belonging to the prestigious F series (1927–1935). This series represented Zeiss’ most advanced line of large research microscopes, and the FZE model was its top-of-the-line configuration. Why the FZE was the flagship of the F series: • Superior optics: Equipped with apochromatic objectives (4x, 10x/0.30 NA, 20x/0.40 NA, 40x/0.65 NA, 50x/0.85 NA, and 90x/1.25 NA) to deliver unparalleled chromatic and spherical correction. • Advanced illumination: Features a slide-in aplanatic condenser NA 1.4 with adjustable iris diaphragm and oblique illumination capability for high-resolution contrast. • Modularity: Includes interchangeable binocular and monocular tubes, centering stage with fine adjustments, and full set of matching eyepieces (5x, 10x, 15x). • Innovative binocular system: Utilizes a prism arrangement introduced by Zeiss around 1926, allowing interpupillary adjustment without altering tube length—documented as a major advancement in “The Binocular Microscope: its Development, Illumination and Manipulation” (Quekett Microscopical Club, 1950). • Professional instrument: The FZE was Zeiss’ most sophisticated and expensive research microscope of its era, supplied to leading European laboratories and universities. Technical features and included accessories: • Serial number: Nr. 237902 (engraved on base). • Interchangeable tubes: binocular and monocular. • Apochromatic objectives (with canisters): 4x, 10x (0.30 NA), 20x (0.40 NA), 40x (0.65 NA), 50x (0.85 NA), 90x (1.25 NA). • Three pairs of matched eyepieces: 5x, 10x, 15x. • Slide-in aplanatic condenser NA 1.4 with adjustable iris and oblique illumination. • Centering stage with fine adjustments. • Original wooden storage case with dedicated compartments. • Original adjustment tools included. Condition: • Very good vintage condition, with minor corrosion spots consistent with age. • Mechanics and optics complete, smooth and precise movements. • All lots show normal signs of use; absence of further statements does not imply the item is free from wear or age-related effects. Approx. dimensions: • Height: 37.5 cm • Base: 23 x 23 cm A rare top-tier Carl Zeiss Jena FZE microscope – a landmark in early 20th-century optical engineering, ideal for collectors, museums, and connoisseurs of historical scientific instruments