An Extensively Well Equipped Beck Optomax Research Binocular Microscope

English, dated 1964 ( on the instruction manual) engraved 'BECK LONDON OPTOMAX Serial No. 31496' , the microscope finished in black enamel and nickel, fitted with the large Rotating stage, binocular head, with large and well fitted set of accessories, including a cased phase contrast set, eyepieces, objectives, and substage condensers, with the original instructions