Microscope - 9609 - 1910-1920 - Germany - Busch, Emil

Complete Microscope Set Emil Busch A-G Rathenow - Stand C1 - ca. 1920s - genuine brand
Description:
For sale is a scientifically valuable and exceptionally complete course and travel microscope “Stand C1” from the renowned Emil Busch A-G from Rathenow (serial number: 9609). The set dates from the Weimar Republic era and is in an authentic, untouched original condition.

Features & Details:
Casing & Stand: Nickel-plated extension tube with perfectly legible manufacturer engraving (“Emil Busch A-G Rathenow / 9609”). The stand bears the original black shrink varnish. The massive horseshoe cast foot ensures an absolutely wobble-free stand (even the underside is clean and rust-free).
Dimensions of the microscope: Height collapsed: 28.3 cm | Height fully extended: 32.1 cm | Width: 9.0 cm | Depth: 8.0 cm (including the compact stage with 7.5 cm x 6.0 cm).
Weight data: The bare microscope weighs 1.5 kg. The total weight of the ensemble including wooden case and complete accessories is exactly 2 kg 910 g.

Optics & Objective Lenses (System C): Included is the original three-part Objective System C. All three lens elements (engraved with “C 1”, “2” and “3”) can be unscrewed from one another smoothly and flexibly combined. The inner glass elements are clean and free of glass disease.
Eyepieces: Complete set with all associated eyepieces. As absolute proof of authenticity, eyepieces No. 4 and 5 have the original ebonite Bakelite eye shields with the engraved “Busch” manufacturer logo in a flowing script.
Illumination: Pivoting Planoconcave mirror. The flat mirror side is clear; the concave hollow mirror side shows the typical age-related silver loss (“mirror rot”) at the edge (see photos), but remains functional in the center.

Illumination: Pivoting Planoconcave mirror. The flat mirror side is clear; the hollow mirror side shows the typical age-related silver loss (“mirror rot”) at the edge (see photos), but is still functional in the center.

Wooden Case & Interior: The original wooden case measures exactly 31.8 cm in height x 12 cm in width x 12.0 cm in depth. The interior is remarkably well preserved: all wooden supports and holders are firmly in their original places. Even the small wooden lid for the slide tray is fully intact! Along the inner edge is an old, period-typical inventory number in pencil. The case bottom bears historic, hard red stains (remnants of original sealing wax/putty from the era). The original magnification table is affixed to the lid.

Condition & Shipping Note:
The mechanism (gear and drive) moves smoothly. The wood of the case has, over the past century, been exposed to some moisture on the outside and has warped slightly, so the door does not close perfectly flush. The key is missing. The microscope itself and all optical parts, however, have been stored completely dry and remained perfectly protected. Included