R. Winkel Göttingen / Carl Zeiss Jena – Antique Brass Compound Microscope – ca. 1910 In excellent tested and working condition – No reserve An exceptional early 20th-century German compound microscope by the renowned scientific instrument maker R. Winkel, Göttingen, featuring original brass construction with a heavy black enameled cast-iron horseshoe base. This highly collectible instrument is particularly interesting due to its original Carl Zeiss Jena revolving nosepiece, illustrating the close historical relationship between the two legendary German optical manufacturers shortly before Zeiss became the majority shareholder of R. Winkel in 1911. The microscope retains its beautiful combination of lacquered brass, polished nickel-plated fittings and original black enamel, giving it outstanding display appeal while remaining a fully functional scientific instrument. The microscope is engraved: R. Winkel Göttingen No. 17899 Additional Winkel markings are present on the mechanical stage and objective, while the revolving nosepiece bears the Carl Zeiss Jena hallmark. Features include: Original brass body Heavy cast-iron horseshoe base Mechanical stage with vernier scale Rack-and-pinion coarse focus Precision fine focus Adjustable iris diaphragm Original plano-concave mirror Three original brass objectives Carl Zeiss Jena revolving nosepiece The microscope has been tested and remains in good working order. Focusing mechanisms operate smoothly and the optics are clear. The brass has developed an attractive original patina with only light signs of age, while the black enamel remains remarkably well preserved. Scientific instruments from R. Winkel are regarded among the finest examples of German precision engineering from the early twentieth century. Their collaboration with Carl Zeiss represents an important period in the development of European microscopy, making surviving original examples highly desirable among collectors of scientific and medical antiques. Approx. dimensions (h × w × d): 35 × 15 × 19 cm Approx. weight: 4 kg Carefully packed and SHIPPED FOR FREE with full tracking.