A black enamelled and chrome binocular microscope signed PRIOR LONDON 17479, with lateral eyepiece focusing, rack and pinion and micrometer fine focusing, mechanical square stage, sub-stage condenser with rack-and-pinion adjustment, plano-concave mirror on U shaped foot, with accessories and bills of sale from NEGRETTI & ZAMBRA for (171 18 6, in fitted wooden case - 17in.high