This microscope is a brass and made by Spencer Lens Co. of Buffalo N.Y.  It is SN 5552 manufactured in 1900.  There is no case.  It is missing the leaves of the top and bottom iris of the substage condenser.  It has a 10x eyepiece and three objectives, 16 mm, 4 mm (44x), and a 4mm APO NA .95 with an adjustable collar.  All control knobs are functional.   It measures 12 inches high when closed down.