Two French brass student’s portable microscopes, unsigned, late 19th century

Two identical French lacquered brass student's portable compound microscopesUnsigned, late 19th centuryEach with rack and pinion focussing to the telescopic tube mounted onto a cylindrical upright fitted with rectangular stage over pivoted plano-concave mirror and mounted via ball and socket joint onto a circular gilt painted cast iron foot, one with external arm fitted with condenser lens and original mahogany box, 25.5cm (10ins) wide, the second unboxed, together with cardboard a box of twelve slides entitled"PARAGON", PREPARED SLIDES, No. L-503, MICRO ORGANISMS to lid (3).