Cat. 28 Rif. 506
A CHARLES BAKER BRASS COMPOUND MONOCULAR MICROSCOPE. English c. 1880
signed on the base "Baker, 244 High Holborn, London", with coarse focusing by rack and pinion, fine focusing by lever and screw, mechanical stage with sub-stage condenser and plano/concave mirror below, on tripod base, in mahogany case with three oculars. 48cm. (19in.) high.