This is a Sawyers Slide Projector/Viewer Stock No. 6520 Model 439-M1 with a 100 Watt Bulb.  It comes with the original box and manual.  It is complete and in good working order with no damage or defects.

Silent operation, Focus down to 20 inches, Stack loading, no tray required, Accepts 2 x 2 inch formats in cardboard or plastic mounts up to 5/64" max. thickness, Holds up to 36 slides, View screen magnifies area more than 7 times, Projector fills 30 x 30 inch screen at approximately 6 feet, 100 watts permits viewing in lighted room, Projector viewer are designed for 35mm and 126 picture format.