A 19th-Century lacquered-brass drum microscope,

A 19th-Century lacquered-brass drum microscope,
unsigned, with rack and pinion focusing, sprung stage slide holder and swivel mirror, with five (of six) numbered objectives, Lieberkuhn, live-box, forceps, bull's eye condenser, six ivory sliders and other items, in fitted mahogany case -- 11in. (28cm.) wide

See Illustration