Spencer, Buffalo, USA Monocular Microscope With Lenses & Fitted Case, c.1920s.A substantial ebonised and brass monocular microscope, model no. 58533, by Spencer, Buffalo, USA, circa. 1920 1925. The microscope is housed in its original fitted wooden case with a working lock and key. The microscope has a retailer's label for 'Belcher & Mason Ltd, Birmingham, England'. All lenses are intact and the microscope is in working order. The microscope comes with a selection of four additional Spencer lenses, however one of the lenses has